
Loading summary
Podcast Host
Welcome to Zoe Science and Nutrition, where world leading scientists explain how their research
Jonathan
can improve your health.
Podcast Host
The blueprint for your life started much earlier than you realized. Long before you took your first breath, before your heart beat its first beat, even before your mom and dad ever met. And as you started to become you in the cramped, dark universe of your mother's womb and your cells divided and your organs developed, biological changes were already beginning that echo in your body today. Once you were born, your nutrition in those early days influenced your immune system and your metabolism in ways that still reverberate in your body today. That's the story of the first 1,000 days of life, from conception to a child's second birthday. A window that's so powerful that scientists now believe it influences our future risk of heart disease, obesity, diabetes, even how our immune system works. And yet, despite its importance, this phase of life is clouded by confusion. The advice we get feels urgent and extreme, but often contradictory. It can feel impossible to know who to trust. So to cut through the noise and dispel those myths, I'm joined by Lucilla Poston, professor of maternal and Fetal health at King's College London and probably the world's leading expert on how a mother's nutrition and metabolism shape the long term
Jonathan
health of their children.
Podcast Host
Also with us is Dr. Federica Amarti, Zoe's head nutritionist and an expert on personalising nutrition to individual life stages. Together they unpack how recent scientific research has transformed our understanding and of how nutrition during conception, pregnancy and early childhood affects our health. They dispel myths and share straightforward science backed nutrition advice to help you and your loved ones navigate this vital time of life.
Jonathan
Lucilla, thank you for joining me today.
Lucilla Poston
My pleasure.
Jonathan
And Federica, wonderful to have you here.
Dr. Federica Amarti
Excited to be here.
Podcast Host
So we always like to kick off
Jonathan
this show with a rapid fire Q and A. And we have these very strict rules for Professors Lucila, which is you can say yes or no. No. Or if you have to, you can give us a one sentence answer. You willing to give it a go? Yep. Can obesity really begin in the womb?
Lucilla Poston
In part, yes.
Jonathan
Can the father's lifestyle before conception influence a child's future health?
Podcast Host
Yes. Federica, during pregnancy, should the mother eat for two?
Dr. Federica Amarti
No.
Jonathan
Are baby pouches a good way to feed young children?
Dr. Federica Amarti
Not by themselves, no.
Podcast Host
Lucilla, can what a mother eats before
Jonathan
conception affect the health of a child as an adult?
Lucilla Poston
Yes.
Dr. Federica Amarti
This episode isn't just for couples trying to conceive or for people who are already pregnant. This is for the population to understand that if we can be in good health before we're pregnant, it massively improves the health of the baby and it improves maternal health. Cause it reduces the risk of things like gestational diabetes or preeclampsia, which is high, high blood pressure in pregnancy and can be very dangerous. So this is the kind of podcast to send to your friends, your aunties, your sisters, your daughters, because if you can get to a better, healthier diet before you're pregnant, that's where the magic really happens.
Jonathan
All right, well, look, I'm really excited to get into all of this and I'd like to start right at the beginning. Lucilla, what does this mean, the first thousand days of life?
Lucilla Poston
Well, if you work out the days, it's the number of days in pregnancy plus the number of days up to the age of about 2. So it's very important in pregnancy and postpartum that you think about nutrition, particularly during those thousand days. I personally think it's not long enough. So you should go back pre conception and then you should go a bit further down the line in terms of the age of children, maybe up to the age of five or beyond. But it's a good way of thinking about vulnerability in mums and babies.
Jonathan
I think the thing that surprises me is that it doesn't start at birth. You're talking about nutrition starting before they're even eating anything.
Lucilla Poston
That's right. Well, they are eating something effectively through the placenta.
Jonathan
Can you help me to understand?
Lucilla Poston
Yeah. So what essentially, the baby isn't eating itself. The mother is dependent on the mum for eating and what it needs, and then everything that the baby needs goes across the mum's placenta, and then the baby gets into the baby's blood and then the baby benefits from that. Or not, depending on what the mother's eating, the nuances of that are considerable. So, you know, there are lots of different things that we have to consider about whether the placenta is transporting those nutrients from the mum's blood to the baby's blood effectively, and which ones are getting across and which ones go across better than others. But essentially, that's how it works. I mean, that's how a baby gets its nutrition is entirely from the mum, but the baby is essentially eating but from the mother's blood and it's not through its mouth.
Podcast Host
Why do you feel that this time
Jonathan
period is especially important versus, I don't know, the 1,000 days from when I'm 10 to 13.
Lucilla Poston
So if you think what's happening from conception up to the age of two is massively fast development. So the baby is an embryo. Then the baby becomes a faecus and the baby becomes a bigger faecus and then it becomes a child. And huge amounts of cell division, which means that the baby's growing the cells of the brain, the cells of the nervous system, the cells of all the organs. What they're doing during that period is dividing rapidly so that the organ or the neurosis system develops in size and complexity. When a division is happening, the baby is very vulnerable. So the fetus is vulnerable, the child is vulnerable. Just the division of cells exposes the mothers and the babies to this problem. So this is why during that period you're vulnerable because of the developing cells and the division that's going on all the time. And it carries on beyond 2,000 days, which I'm saying maybe we need to think of a bit longer than 2,000 days. But the feces and the baby are particularly vulnerable because they're growing.
Dr. Federica Amarti
We call it the golden window of opportunity. Because as Lucilla said, Jonathan, every organ, every cell, cell actually is built in that time period, especially the first trimester, is when almost all of the organs are set by the age of three. Children's brains are pretty much almost to adult size. So it's a lot happening in those first three years of life.
Jonathan
Hang on, I just want to say. So you say by the age of three, my brain is almost full size.
Lucilla Poston
I mean, it gets bigger, but all the cells are there. The connections are made between the neurons which are the cells in the brain.
Jonathan
They're just not as well hooked as most parents would like them to be.
Lucilla Poston
Perhaps not. Well, they carry on until puberty and beyond, of course, but they're more V period in development is up to that age. Yeah.
Jonathan
What you're saying is so much of like a human being's development is actually happening just in that first a thousand days. And therefore, if anything doesn't go in the best possible way, it's likely to have a knock on effect sort of throughout the rest of your life.
Lucilla Poston
If you take the kidney for example, by the time a child is one, the kidney is fully developed in terms of its structure, the heart is the same as the number of cells in the heart set by the time you're born, pretty much. So you can see why it's important to get that division right and to get the growth right, because if it's perturbed in any way, that can then last forever.
Jonathan
And I feel you've hinted at this, but I'd like, just to make sure I understand it, which is things can go wrong through this period and that therefore what happens in those first thousand days can end up having an impact on your long term health. Could you help us to understand that, Lucilla?
Lucilla Poston
I think it's. Well, think of a few examples and how this all started. Actually, there was a guy called David Barker who, when I was first a young student, was sort of ridiculed for his ideas. Nobody believed him. But what he showed was that in the north of England, if people were born small, you follow them up until they're older, that they have more cardiovascular disease, they have more problems with their metabolism and cholesterol and so on. And he said, well, this is because they were born small. And nobody believed him and they questioned his statistics. And I can remember him being ridiculed on a stage at a conference, you know, and it was called the Barker Hypothesis. And David Barker was an evangelist, if you like, he was really, really keen on this, but he was right. So if you, then you start looking in studies in small animals and so on, you could see this, that when there's a small baby, they have a fewer complements of nephrons, sometimes a fewer the kidneys are imperfectly formed, the hearts are not adequately mature. But in people, exactly the same thing happens as we've seen in rodents and everything else we know that is absolutely a permanent change which will go on. And during your life you can modify the risk by eating well and being healthy. But if you have that initial problem, then you're more vulnerable to chronic diseases, I mean, even cancer, but particularly metabolic diseases and cardiovascular diseases. That was the start of it. And I remember saying, I took him to task and I said, well, the problem we have, David, is not so many small babies because of undernutrition. We have an awful lot of large babies because of overnutrition, too much energy being taken, pregnancy. And he said, oh no, no, he says, that's irrelevant. So I set out to prove him wrong and I think we did prove him wrong because it happens the other way around as well. So if the baby is born too large, there seem to be, there are longer term consequences, particularly with obesity and another example of sort of some of the awful experiments of nature, if you like. At the end of the Second World War, 1944, in a reprisal against the Allies and helping the Netherlands, the Nazis imposed a siege on a lot of the big cities in Holland. The problem about the siege was that food supplies weren't getting into Amsterdam, for example. And Then the clinicians in the hospitals carried on recording the weights of the babies, the weights of the placentas, and then they followed and still following up the children from what was called the Dutch hunger winter. And these children became adults who had quite substantial increased risk of cardiovascular disease, an increased risk of lung problems and so on. So that was one of these ghastly sort of nature experiments, if you like. And that's been repeated again, the siege of Leningrad and a famine in China and showing that very poor nutrition in neutro and being born underweight has long term consequences for health. So that was really the beginning of the whole concept of the developmental origins of health and disease, which is what it's now called.
Dr. Federica Amarti
And I think what's fascinating about the Dutch hunger studies and those other studies, Jonathan, is that depending on which trimester you're in, the impact can be larger. So most vulnerable period is the first trimester. And what's really important about these studies though is that these are extreme conditions, famines, right. So you have a real lack of food, lack of access to. And often these studies are then translated to countries like the uk, where we have access to food a bit too much normally, and it doesn't work that way. So I think what's really important to note here is that pregnancy as a metabolic state is incredibly resilient. What that means is that your body will take all it needs for the baby first and then mom can wait. So these amazing studies that helped us to learn about development also show us just how resilient pregnancy is.
Jonathan
So if anyone is listening to this right now, either they're pregnant or they know someone who's pregnant, should they be worrying about the mother getting enough food to make sure that their child doesn't have these long term issues that you're describing.
Lucilla Poston
And it's particularly relevant to people who are underweight. But yes, I mean, it's all a matter of balance and common sense. I mean, those were extreme conditions, but they told us so much about the possibilities of lifelong consequences. Obviously, undernutrition is an issue. Overnutrition is at the moment a much bigger issue.
Jonathan
It's sort of something we've all been told always, like, you need to make sure you take certain vitamins when you're pregnant. You know, you need to eat certain sort of things in order to build this whole new baby. That seems very logical and clear. It's much less obvious that somehow if you're eating too much that you're going to cause any problems. But I think that that is what
Podcast Host
you were also getting at, Lucille?
Lucilla Poston
Yes, yes, I was. We're conflating two things. One is the energy intake, which is too much energy intake, calorie, calorific intake will lead to a larger baby. The question about which nutrients are important, which we could consider as well, which is a different, really different sort of area, is which are the most important micronutrients and vitamins that a mother should be taking. And I think there is a lot of discussion about so many different variables and women do get very confused and I think it boils down to a few. But let's talk about the obesity side of things, first of all, because in the UK and in most high income countries where, you know, even India, South Africa and so on, obesity in pregnancy is becoming a real pandemic type problem. And first of all, the obvious consequences of it are maybe infertility, which before somebody gets pregnant, but during pregnancy is the explosion of gestational diabetes, the higher risk of preeclampsia, then lots of risks at delivery in terms of postpartum haemorrhage, stillbirth. I mean, these are all relative risks and substantially increased risk. But you're not necessarily going to have a bigger baby, but it's become a major obstetric problem. So that's before we think about the long term effects on the baby. We have to think about the conditions in pregnancy which the mother might develop, which then in turn lead to problems for the mother's health potentially in the long term and also for the health of the baby. So the infertility side of it, I think a lot of people who are overweight or living with obesity don't appreciate that they may not get pregnant in the first place. And that comes as quite a shock. And I think that's one of the problems that is not widely understood about the fertility issue. And then once people do become pregnant, then they are very surprised if they get diabetes very often. So I think we as professionals in this community need to make people understand a little bit more about the potential consequences. And then if you are considering having a family, the most important thing is to try and get to a normal weight before you conceive and then lot of this will go away.
Jonathan
And could we talk a bit more about the factors that can influence fertility, the chances of conceiving? And within that, I'd love to pick up on your, I think, very surprising answer to that question at the beginning about the father's lifestyle or also influencing the child's future health.
Dr. Federica Amarti
Another notification, something else to add to the to do list. Is it work? Is it life? Admin or maybe another email from your boss? Your heart rate might be quickening at the thought. After all, life is full of little moments that add to our mental load. If you're feeling wired, tired, irritable or on edge, that's your hormones responding to everyday stressors. They're trying to tell you something, and your diet could be part of the solution. Your gut is a hormone factory, producing and responding to all the hormones that affect your hunger, mood, energy levels and stress responses. Feeding it the right foods is a crucial step to supporting those systems. That's why gut health expert Zoe and Reproductive Health pioneers Hertility have teamed up to create a free guide grounded in science to help you decode what your hormones are trying to tell you. You'll find out how stress responses can impact your body and how diet influences hormones, metabolism and mood. You'll also find delicious recipes that support these systems. Learn more about your hormones today and download the free guide@zoe.com hertility or click the link in the episode Description
Lucilla Poston
Even before the embryo is formed. So this is why preconceptional health is really important. The mother's ovaries can be affected, so the cells within the ovaries, the oocytes, the eggs, if you look at them under a sort of microscope, if you like, or in the laboratory, they have potentially metabolic defects, so they don't work as well as they should. You can show that they have more oxidative stress, so that means they have free radicals. They get damaged by having damaging molecules. So if you are living with obesity, your eggs might not be as healthy as others. And if you look at the early embryo, the same things as metabolically can be suboptimally healthy. So you start off with that potential disadvantage. Not everybody, as I say, is going to have that. So, you know, don't get too, too worried about it. But we know that people have looked at the eggs and the early embryos, and I've done this myself in rodent studies. But there's some very good studies from people who've given their eggs and early embryos from EPFA research, which was a very helpful thing to do for us to understand. So we know there are metabolic potential problems and that's probably why there's a high rate of miscarriage in people who are living with obesity. So that's part of the problem. Now the fathers, yes, less understood, but certainly the sperm can be affected by obesity in the father, so that there's good evidence that the sperm again have the free radicals and oxidative stress and the actual genetic epigenome, the genetic makeup of the father's sperm can be affected the actual health of the genes in the father's sperm. And again, studies in animals have shown unequivocally that if the father is living with obesity himself, then it can have an effect on the health of the embryo. I think we should emphasize relative risk. So, you know, there is an increased risk and that risk might be small, greater depending on yourself and your fitness and your health, you know, but there is a risk, increase in risk, I'm
Jonathan
guessing for the fact you're talking about this though. This is not like this just changes this by 1%. This is quite a meaningful change.
Lucilla Poston
Yeah, it is a meaningful change. Yeah.
Jonathan
It's the only thing that matters before conception, you know, whether or not I'm overweight or is there more to do than myriads.
Lucilla Poston
The other most important thing is folic acid intake. And so I'm very pleased to say that our government here in the UK has now followed America and Canada and a lot of other countries in now putting folic acid into our flour, only at the moment into white flour, but, you know, hopefully might go across the board and all sorts of flour. But this will help because about 80 to 90% of women who are of reproductive age have inadequate folate stasis. So you can measure it in people's red blood cells. And there are about 60, 70% of people who have a level of folic acid in the red blood cell which is low enough to cause congenital defects in the children. This is a massive problem in the uk. Most other countries have had folic acid in their flower for a long time. And this problem has go way to a certain extent, but we're only just in the UK getting there. So this is very important.
Dr. Federica Amarti
And I think what this touches on is the fact that we live in a world where we often have too much energy, too many calories, but actually not enough nutrients. So we have this double burden. So we have people who are maybe overweight or living with obesity, but they're not getting enough nutrient dense foods. If we think about where does folate come from in food, it's beans, it's leafy greens. So it's the foods that we're not eating enough of. And luckily now public health is has intervened and said, okay, we need to fortify bread, which a lot of people eat every day. But then you have this discord, right, Jonathan, where you have people who are living with obesity are overweight but actually their nutrient status isn't optimal.
Jonathan
And presumably, I could be listening to this. I'm not overweight, but also I could not have all the optimal nutrients if I'm looking to conceive.
Dr. Federica Amarti
Yes, it goes both ways, because the quality of our diet is suboptimal at population level. So it does vary with income, education level. There's lots of variety within that. But at a population level, we're not really hitting the mark when it comes
Lucilla Poston
to nutrient intake in terms of nutrients that we're particularly worried about. One is folic acid, the other two are iron and vitamin D. So those, you know, I was saying maybe you don't need to take multivitamins. The majority of the population would benefit from being aware of the issues about iron and folic acid and vitamin D. But we don't give iron to everybody who's pregnant because they might get iron overload. We have to measure their haemoglobin. First of all, we have a profound amount of anaemia in our population of young women, about 40%. So in anaemia, if you're obviously anaemic and you don't have enough oxygen with a baby and you may be very tired, you may be more prevalent, more likely to have postpartum haemorrhage and things like that, and infection. So those are the three, the really three important micronutrients to think about before pregnancy and in pregnancy.
Jonathan
What else could potential parents do if they're looking to increase their chances of conceiving?
Lucilla Poston
A balanced diet is the most important thing. I mean, nutritionally, just a balanced diet. The other important element is physical activity. You know, not suggesting you should Suddenly start running 20 miles a day or whatever, but to increase your level of physical activity, because physical activity improves your glucose control. And as we mentioned, one of the most important complications of pregnancy in women affected with obesity is getting gestational diabetes. And we could talk about that because that requires, you know, a lot of visits to hospital. It requires monitoring your blood glucose and so on. So being physically active will help your glucose control. And then when you become pregnant, carry on. Don't stop with physical activity.
Jonathan
Don't stop with physical activity.
Dr. Federica Amarti
No, keep it up. And don't start new exercises or contact sports. Right. Don't stop playing football, but certainly keep it up. Super important. Also, birth is quite hard physically, so being physically active is helpful for that. Not smoking, not drinking, not smoking. It still needs to be said, because there's actually quite a high proportion of couples trying to conceive who smoke and drink. So Reducing those is really important, cutting them out altogether. And then there's some evidence around caffeine intake, which I'd love to get your take on, but mostly during pregnancy. But if you're like me and you drink four coffees a day easily, you might consider switching that down a little bit if you're trying to conceive so that when you then are pregnant, you can easily have your one cup of coffee a day.
Jonathan
What do you think, Lucilla?
Lucilla Poston
I think the jury's out on that, to be honest with you. But, yeah, I mean, you see one study saying it's bad and then another study saying you might be okay, but it's a stimulant and it's probably anything like alcohol, which is a stimulant, and caffeine, it's good to abstain, but not completely. I mean, alcohol, yes, but not caffeine.
Dr. Federica Amarti
Caffeine. One cup of coffee a day.
Lucilla Poston
Yeah.
Jonathan
So one thing I'm always conscious whenever we. We talk about anything to do with pregnancy or breastfeeding or any of these sorts of things, is that there's an enormous amount of guilt associated with not being a good enough parent, and particularly not being a good enough mother. And there's probably be a whole bunch of people listening to this right now who are already pregnant who are saying, well, I didn't do any of those things and I'm worried my iron level was too low or I wasn't doing any physical activity. How worried should they be? What can you say to them?
Lucilla Poston
Well, you know, the statistics are you'll probably have a normal pregnancy because we're talking about risk, increased risk. So please don't panic because. But there are things that you can do, and one of the most important things is just to eat a really balanced diet. Now, I think it's important to recognize you can get inexpensive foods, like, for example, oily fish, which recommended that you should eat in pregnancy. There are some expensive oily fish and some very inexpensive, like mackerel. And then if you're living a sort of chaotic lifestyle, maybe, or a single mother, those things will all affect your pregnancy to add onto the problems of nutrition. So we absolutely understand that, and we've been doing studies in South London recently to try and pinpoint exactly what it is that interferes with the healthy pregnancy. It's not just nutrition, but there are all these other factors, and we in population health need to address these to actually really improve the situation holistically. It's. I mean, in the uk, the government's put funding into Community hubs now, which I think are doing a really good job in being accessible by anybody living near a hub. Mother and child hubs we have in South London are extremely good, where advice is freely available. You can address your worries and have a chat with someone, because mostly you're going to be okay. But it is of course, sensible to think like, there's your baby there and you need to be helping your baby as much as possible. But don't panic.
Jonathan
I love that we have now successfully conceived in this conversation just now, which is brilliant. I now have this vision that the fetus is there and we started talking about misinformation, which is definitely something I wanted to talk about, because there is so much information online now and in social media about pregnancy and what you should and shouldn't do, and there's a lot of contradictory information out there as well. So I'm actually really keen to understand what the latest science tells us. And I think I've just heard something very reassuring about how resilient, in fact, the fetus is and that you don't need to be perfect. But I'd love to talk a bit more about what we both know you really do need to make sure you're doing, but also then maybe touch on some of these things that are a bit controversial.
Lucilla Poston
Okay. One of the first big intervention studies I was involved with was to request that pregnant women living with obesity came into a study whereby half of them were allocated to what we call the intervention arm, so that they saw a health trainer every week for about 10 weeks. We gave them sensible dietary advice which was tailored to their personal needs. I was saying in terms of expense and what they were able to do in terms of physical activity and so on, and then the other half just had normal care from their midwives and so on. So the women were very receptive to the dietary advice and they did improve their diets. Then we looked in the blood samples of these ladies and their metabolism was better. So all things that we can measure, like glucose and products of abnormal glucose, all were good and went down. So that was very good. The dietary advice was. But we've just been talking about an affordable, healthy diet. There is this misconception that you should eat for two, and we mentioned that before. Absolutely no need to eat for two. In the UK, we recommend that women need just an extra, extra 200 calories in the third trimester. So you don't really need, as you say, the baby's looked after very much by the mother's metabolism and the mother metabolizes their own fat to help the energy get to the baby. And physical activity, which I can't really emphasize enough, there's been a recent collaboration which has put together all of these studies, which was in the British Medical Journal just a few weeks ago, was that physical activity is looking to be a good one to focus on. And physical activity does help you improve
Dr. Federica Amarti
your blood glucose levels at an individual level. I think it's important to remember what we talked about a bit earlier, that physiologically your body will do everything it can to get what it needs from your diet and from your lifestyle to support your baby's growth as best it can. There's a lot of misinformation online that says, you know, one stressful event in pregnancy will ruin your child or one cookie that you eat will change the epigenome, the genetics of your child. That is not the case. Pregnancy nutrition requires adequacy, not perfection, not optimization. A balanced diet. So it contains all the food groups. You have lots of fruits and vegetables. No surprise here, but fibre is really important for pregnancy outcomes. So lots of plants and plants can be inexpensive. Tinned beans, frozen berries, and then your oily fish, maybe maximum six eggs a week will be fine. Tofu if you like it. So just a variety of food try to avoid. Some things I found in some of the research I've done is that sugar sweetened beverages can be harmful. So reducing those in your diet, that's the one thing that really. Drink water, drink water. But otherwise your body, like pregnancy, has evolved to support the baby's growth, sometimes at the cost of the mother's nutritional status. But so don't worry too much and as Lucilla said, try and get support if you can. If you live in a country where there is support for pregnant mothers, access the care as much as you can, get that extra input so that you can have a healthier pregnancy.
Jonathan
Can we talk a little bit more about how important the time is that, you know, I spent in the womb for my long term health? Because the example you gave was if I'm really small, that there might be this long term impact. But now you're saying that's not really the problem anymore because our parents are all, you know, getting enough calories. You know, bluntly, why do I keep.
Lucilla Poston
Yeah, well, the problem is that all the studies, and I've done some myself, show that the mother, when you're in the overweight and obese categories, is directly related to obesity. And the child, as the child is going up, I mean, it's an extraordinarily strong relationship. What's that about? Because that is worrying, because if a baby is born large, that baby has a higher risk of becoming obese. So obesity tends to track through childhood and then into adulthood.
Jonathan
And, Lucila, if the child is born large and has a higher risk of obesity, what will that mean for their health and their health risks, then?
Lucilla Poston
The health of the child later on is likely to be affected by their obesity. So they may get diabetes, they may get more cardiovascular disease. And this has been reported observationally, this happens. So if you're looking in the UK at the moment when children first go to school, about 9% of them are already obese. And by the time they get to 9 or 10, that, you know, 20% of them are obese. And then that tracks through to adulthood.
Jonathan
You're saying 9% of children, when they first go to school, they're still at age 4, are already categorized as living with obesity. What would that have been like 50 years ago?
Lucilla Poston
None at all?
Jonathan
Like, zero. So it's an immense change. And you're saying that that isn't just because they're being given bad food after they're born.
Lucilla Poston
So there's a combination of. We know from a lot of research that the foetus is very susceptible to extra calories, and so the baby grows. We also know that the baby's brain is very susceptible to those extra calories. And what we think is happening is that the area of the brain which controls eating behaviors seems to be permanently rewired. So that, I mean, not, you know, not a huge way, but there are. There's very good evidence that this happens. So that area of the brain is called the hypothalamus. And then there are studies using imaging studies with mri, which suggests if you look at the brains of adults whose mothers were living with obesity, that you can pick up this change in the hypothalamic structure. So that is, you know, worrying what you're thinking you might be doing is rewiring that part of the brain. So the child might be born to be having. Be more susceptible to eating more or having less satiety.
Jonathan
I think you're saying that even while, you know, I'm in the womb because of the food that my mother is eating and maybe like all the food she's been eating for many years before I'm born, this is actually going to affect the way that my brain is developed, and this hypothalamus in my brain is actually being rewired, and this is gonna affect my hunger, and therefore I Eat later. And I guess none of that sounds as surprising as it would have done a few years ago, as we now see these amazing GLP1 drugs. Because I'm hearing this and saying, well, this all sounds quite linked. Do we know whether this is playing into this, Lucilla?
Lucilla Poston
When a baby, there's too much glucose basically, getting across from the mother, too much sugar going from the mum to the baby. The baby grows adipose tissue, so it starts getting a bit fat. The adipose tissue is the cells of fat mass. They start producing this hormone called leptin when they get bigger and the more of. And leptin goes across into the brain of the baby. And this leptin is known to change the way the cells of the brain develop. And this is absolutely unassailable evidence for that. So leptin, if there's too much of it, it can actually stop the neurons in the hypothalamus in that area of the brain which controls appetite, stops them growing normally so they don't get to where they should. So it's the actual development of fatness in the baby which feeds back to the baby's brain with this hormone, and that can change the way the baby's neurons and cells of the brain develop. We don't always have a mechanism for these things, but there is a mechanism which suggests that's happening. And, you know, it does go Back to the GLP1 receptor agonist story, because that's all about hypothalamic control.
Jonathan
If the mother has too much sugar in her blood, then actually the fetus can end up putting on too much fat in the womb, then it makes this hormone. You mentioned, leptin, that goes into the brain of the baby, and that actually means that part of their brain, you call this the hypothalamus, which is around managing hunger, actually doesn't grow properly. So we actually understand now sort of the set of mechanisms. I feel like, as a small baby, after you're born, we all think like, putting on fat is great. It's sort of the thing that you're most looking for right when the baby is born. It's actually quite skinny generally. And the that you worry about as a new parent, I remember, is like putting on weight. So why is it that putting on weight here in the womb is a bad thing?
Lucilla Poston
Because the brain is developing, it's at a rapid stage of development. Postpartum, the hypothalamus is pretty much developed, so in utero in the womb, the fetus is particularly susceptible. The fetal brain is particularly Susceptible.
Dr. Federica Amarti
If a baby is born with a lot of fat tissue, that's not helpful for long term health outcomes. But also this what we call rapid rebound weight gain. So when babies are born a bit skinny and they gain a lot of fat very quickly, that's actually also not that helpful. What you really want, ideally is for a baby to be born a normal weight for their gestational age, normal fat distribution, and then to track that and not have these random weight gains with more fat tissue. Cause it does then alter their long term metabolic health.
Jonathan
Got it. I guess what I'm thinking is a healthy baby is quite a chubby baby. Right. At least in my mind. You don't expect a baby to be as skinny as you would expect their child when they're older. Is that.
Lucilla Poston
That's true.
Dr. Federica Amarti
Yeah. There's adequate adiposity, there's like a nice level of roles you want them to. Yeah, exactly.
Lucilla Poston
And so what we're seeing is when they first go to school, they've got that fat, which they've probably had all the way through the first two and a half or four years of life. We should look at the diet of children. Postpartum after delivery, up to the time they go to school. It's probably the most important time for prevention of obesity. And I don't think most governments have really taken that on board yet. But do you want to go back to diabetes in pregnancy and glucose?
Jonathan
I think you were saying that having too much blood sugar in the mother's bloodstream is a problem.
Lucilla Poston
So a lot of people who are living with obesity have a risk of getting diabetes in pregnancy because they haven't had diabetes beforehand. They may have, but generally they haven't. When anybody becomes pregnant, your blood sugar goes up a bit and that's a really normal response to pregnancy. So your hormones, estrogen and progesterone, all the hormones that go up massively in pregnancy, they actually help push glucose up a bit. Basically helps the glucose get across into the baby. So it's a good thing. It's a good thing. Now the problem about that is if you are also living with obesity and you have a large fat mass, then those fat cells will contribute to what we call insulin resistance. So what's insulin resistance? Insulin controls our blood sugar. And you and me and everybody. But if you become resistant to insulin, it means that the glucose in your skeletal muscle, in your muscle, in your liver, in your fat tissue, doesn't get taken up into the cells of those tissues enough. And then what happens is the glucose stays up in the blood. So the mother who has got a high bmi, high body mass index, will, when she becomes pregnant, her glucose will go up normally, but then her high increase in fat mass will make her insulin resistant and that can be enough to tip you over into full blown diabetes. Pregnancy itself is a risk for digestion of diabetes, particularly if you are living with overweight or obesity. We have an epidemic of it at the moment.
Jonathan
So there's a huge number of people who don't have diabetes, get pregnant and then while they're pregnant, end up having diabetes, which means this very high level of sugar in their blood. And then when you stop being pregnant, you stop having the diabetes again.
Lucilla Poston
Yes. But then you are at much greater risk of getting long term type 2 diabetes.
Dr. Federica Amarti
Because pregnancy is really a metabolic challenge. Right. You have this naturally increasing blood glucose levels, which, as we've just said, is a normal part of pregnancy. But it does put a challenge on your, your body to then distribute that glucose effectively. And if you're already a bit compromised, so if you're already overweight or living with obesity, then your body doesn't quite have that resilience to deal with that. I think this is really important. When we talk about elevated blood glucose in pregnancy, we're not talking about the odd piece of cake or the cookie, because in women who aren't metabolically compromised, your body will deal with that. It's in this much more systemic. When your blood glucose is elevated all the time, that's when it starts to become a problem and lead to issues like large babies.
Jonathan
What can women do to help reduce their risk of gestational diabetes during pregnancy?
Dr. Federica Amarti
Well, so as we've heard from Lucilla, I think the biggest thing is to try, if possible, and reach a healthy weight before you conceive. That's the best way. And I know that still around 50 to 60% of pregnancies in the UK and the US are not planned. But if possible, if you're thinking of having a baby or you're not using contraception so you could fall pregnant, it's useful to think about reaching a healthier body weight before you fall pregnant. That's the best thing during pregnancy. As we've heard, changing your diet to be healthier will help with your health, but it won't necessarily reduce the risk for gestational diabetes. The best way to do that is to move. So physical activity, because physical activity directly reduces blood glucose concentration whilst you're moving. I think this is really important. Often when we think about movement in pregnancy, people think, oh, I'LL go for like one walk and I'll be done. But actually it's movement throughout the day that helps to really regulate blood glucose. And post meal movement after a meal really helps your body to remove that glucose from the blood because it goes straight to the muscles that are helping you to go for a walk.
Jonathan
Is it dangerous to do strenuous exercise when you're pregnant?
Lucilla Poston
Yes. Yeah. Well, you would not recommend strenuous exercise. We did a study of people who went on park runs who were pregnant. Absolutely fine to carry on running. Don't start doing park runs if you've never done one before, but don't feel you need to stop. So anything which is not unsafe, like having a ball or skiing or something when you really might hit yourself in the tummy. But carry on if you've been doing
Dr. Federica Amarti
it before, as Lucilla said, it's not a good time to start a new activity now. If you've been completely sedentary and you're entering pregnancy and you want to change your behaviours, then things like walking, low impact exercises, yoga, swimming and lighter weight or body weight resistance are recommended. So keep doing what you're already doing. If you're not doing enough, stick to the things that are safe to do if you have them a day before.
Podcast Host
Basically, pregnancy and early childhood have become magnets for extreme advice and fear mongering. In this episode, we're unpacking what the latest science actually says. If someone you care about is feeling overwhelmed by conflicting claims or worrying about what to do, why not share this episode with them? It can help them to focus on what truly matters.
Jonathan
I'd like to wrap up on pregnancy by really explicitly talking about what you should and shouldn't eat to maximise the health of your fetus with very clear, clear, actionable advice.
Dr. Federica Amarti
When you're trying to conceive in pregnancy, the dietary recommendations don't change that much. It's try to have a mostly whole food diet, so where possible, buy the ingredients as whole foods. Whether tinned, frozen, dried, doesn't matter. It can be affordable. We talked about tinned mackerel, we've talked about jarred chickpeas. All these foods are fantastic. Try to aim for a diet that has a variety of foods, lots of different plants, 30 plants a week is a really great place to start. So you're including herbs and spices, nuts and seeds, whole grains, fruits and vegetables, legumes and pulses. So if you think about it as a plate, Jonathan, about half of your plate is made up of plants, then you've got A quarter of your plate is made up of complex carbohydrates. So whole grains. This is your barley, your rye, your quinoa. Pearl barley's delicious. I love it. And all these lovely carbohydrates. Complex carbohydrates. It's sweet potatoes. And then the other quarter is where you would choose your preferred protein source. So that might be chicken, it might be eggs, it might be tofu, it might be your tinned mackerel. Oily fish. Three times a week is recommended. Eggs are great, but no more than six a week. So that's like the outline. And then try to choose healthy fats, the extra virgin olive oil, or if that's too expensive, which the prices have gone up, you can use olive oil or other. Other seed oils, which are healthier alternatives for cooking to things like butter or lard, for example. And we've talked about drinking as well. Important that you don't drink any alcohol and important that you have water as your main drink. So really avoiding sugar.
Lucilla Poston
Sweetened drinks are really important to avoid.
Dr. Federica Amarti
Yeah, so that would be like, you know, the overview. I'm quite cautious with caffeine, so I actually recommend the women I work with that they reduce it right down or one cup a day. But then that's a smaller point than everything else we've just covered.
Jonathan
What about the Paleo diet? I've heard some people promote that. That's a really good idea. And I've also heard this recently. Apparently pregnant women should eat six eggs a day. What are your thoughts on these?
Dr. Federica Amarti
Okay, so anything like a paleo diet, which excludes entire food groups, is not recommended in pregnancy. Side note is that if you're vegan and you want to continue with a vegan diet in pregnancy, you can, but you will just need support and make sure your supplements are micronutrients. What I'm seeing online is so much misinformation about certain foods that you should absolutely be eating in pregnancy. There's this myth that you have to have four or six eggs a day to reach the adequate amounts of choline to have a baby's healthy brain. This is just completely wrong. You don't need to eat that many eggs. About six eggs a week will do it. And there are other foods that contain choline. And as we've discussed, your body's really good at getting what it needs in pregnancy. So if you're very diet, you'll get the nutrients you need. And in terms of micronutrient supplementation, I guess we've talked about folic Acid as being the really important one. Vitamin D, especially in the winter months. Iron, if your iron status has been found to be low. And some women will look at iodine as well. So iodine is another one of these micronutrients which in the UK we don't have iodized salt. A lot of other countries do around the world. So you might think about iodine, especially if you don't eat a lot of.
Lucilla Poston
There is evidence that iodine isn't as high as it might be. But again, if you have about balanced diet, it should be fine.
Jonathan
Brilliant. I am conscious of time. And you said there's a thousand days. And I've worried that we're still. By my calculation, we're only at about 280. So presumably the last 1000 now is getting the baby to 2 years old, which is a period that I only dimly remember with both my children. Cause I was constantly tired. Maybe we could talk a little bit about breastfeeding to start with. How important is that, Lucilla?
Lucilla Poston
So it's very important. So for all sorts of reasons because it helps the baby's immune system develop and it gives the right composition of nutrients in the mother's milk. And the baby doesn't need anything more than the mother's milk in the first few months of pregnancy.
Dr. Federica Amarti
As Lucilla said, the actual composition of breast milk is the ideal combination for babies. It's essential for gut microbiome composition. So a lot of the. The sugars contained in breast milk are not actually accessible to us as humans. They're there solely to feed the gut microbes in the baby. So there are specific gut microbes that are essential for infant and children's health. And they can only eat these sugars in breast milk. It's fascinating the amount of microbes that live in it, the specific sugars that are in it, all the immune systems, proteins that go into the breast milk. So for example, Jonathan, if I'm breastfeeding and I get left with somebody with a cold and they sneeze, my immune system will pick up that cold virus, make the antigen to combat it, put it into my breast milk to my baby within two hours.
Jonathan
Within two hours, yes.
Dr. Federica Amarti
So that the baby doesn't get the cold.
Jonathan
That's real. That's not.
Lucilla Poston
No, it's super important. Super important.
Dr. Federica Amarti
So it is essential. Now I have breastfed both of my girls. I had real difficulty with my first. It's really hard. Right. And we don't have enough support for breastfeeding mothers at all. Too quickly, some will say. I'LL just get. Give them some formula and get some rest. Right. So the system doesn't support breastfeeding mothers. And in other countries, human donor breast milk is given before formula milk, which makes more sense when you think about it, for the baby's health. So I think what's really important in this conversation is to point out that a, we need to support mothers way more with breastfeeding. We need to make it easier for them, educate them on some of the difficulties. Something as simple as adequate latch can completely transform breastfeeding. There's a lot of perceived inability to breastfeed. So women think they're not making enough milk and they're like, I'm not making enough milk for the baby. That's actually physiologically not necessarily true. So women think they're not making enough milk, but they actually are. But this perception makes them stop breastfeeding. So education is really important. Understanding how magical breast milk is for the baby's health is really important. Also empowering women that even if you only breastfeed for a bit or even if you're combi feeding, so if you're breastfeeding and formula feeding, that's actually still, still great, still better than not being not breastfeeding at all. That's not to say though, of course formula milk's replacement is adequate. Right. They've been carefully formulated, they are very carefully screened and you can't just make up your own formula.
Lucilla Poston
All of them are very carefully screened.
Dr. Federica Amarti
So they are obviously created to be able to support a baby's healthy growth. So I think also really important to note that if you do formula feed your baby, that is absolutely fine. It's just that formula milk has not yet been able to fully replace all of the benefits that we see from human breast milk. It's just not there yet, especially the
Lucilla Poston
immune side of things.
Jonathan
Yeah, it's fascinating what we know about how much it's sort of feeding your gut and also this link to the immune system. It's really.
Lucilla Poston
And when we looked in the mother's blood, mothers were breastfeeding and not and found that their metabolism was much healthier when they were breastfeeding. I think it's worth saying, particularly as we were talking about women living with obesity, one of the problems about obesity is actually that it might be difficult to breastfeed. It could be that there's a hormonal effect on producing milk. It could be just a physical problem about the discomfort of breastfeeding. Of course, from the mother's point of view, breastfeeding does help weight loss after pregnancy, which is another problem for the mother intrapartum.
Dr. Federica Amarti
So the weight that women gain and keep between pregnancies is actually a big risk factor. So for women's future health. So if you put on weight for your first pregnancy and then you're not quite able to lose that weight before your next pregnancy, that puts you at higher risk of obesity later in life, which is actually a really important point.
Lucilla Poston
And this increases the risk of problems happening in your next pregnancy. Weight gain between pregnancy is related to more gestational diabetes, more preeclampsia, more stillbirth in your next pregnancy. And this is a preconception health message too, because before the next pregnancy is to regain your your pre pregnancy weight as much as you possibly can.
Jonathan
So I would like to sort of come to a conclusion now with what should we be feeding babies at the point they move off breast milk or formula? Because I'm hearing all this conversation about just how important the nutrition is for us from the point of like fetus on, what should they be eating?
Dr. Federica Amarti
So babies need to be introduced to the healthy, varied diet we've been talking about throughout this podcast. Important nutrients to consider as soon as you start weaning. Iron is one of them. So babies iron stores do go down throughout infancy. There is iron in human breast milk and the form that the iron is delivered in in human breast milk is really highly available. So there's also this myth that human breast milk doesn't provide it. It does, but children do need a lot of iron as they're growing up. So iron rich food, beans, lentils, meat and poultry and fish, all of these foods contain a lot of iron. So that's great. They need to be exposed to as many foods as possible. So a wide variety of foods. We want them to try vegetables and fruits, whole grains. But you know what's wonderful about weaning is that they'll try pretty much anything. So between the ages of 6 months and a year, you can put sauerkraut, you can put all sorts of foods and the baby will just go for it. They develop individual taste later. So expose them to as much as possible. Spices, don't be shy, put garlic, don't add sugar or add salt to food,
Lucilla Poston
and don't give them foods which are full of sugar and salt.
Dr. Federica Amarti
People often say to me, oh, your kids love natural yogurt. How did you do that? Well, I introduced them only to natural yogurt. I didn't give them flavoured yogurt straight away. So be really mindful of not Buying prepared products that have added sugar and salt and are marketed as a healthy
Lucilla Poston
option for children and particularly follow on formula. Children do not need follow on formula and it is marketed as such. It has a very high sugar content. And then yogurts containing fruit, natural yogurt is much healthier than yogurt containing fruit because it's full of sugar.
Jonathan
And what about all these pouches? Because I'll be honest, we pretty much fed our kids on these pouches. As you get a little bit past the weaning stage and you're all busy and you're out, I'm pretty confident I might not have been doing the right thing.
Dr. Federica Amarti
So it's absolutely infuriating, right? Because these products are marketed as being healthy, ideal for weaning, ideal for finger fat food. It's absolute bs, Right? Essentially those front of pack claims are there to help sell product. They've got nothing to do with health. And these pouches are mostly water, sugar and nothing else. There was a big analysis that was done led by BBC in the uk, so like a TV show. And they analyzed lots of pouches, Jonathan. Then they found that in the pouches they didn't even have the nutrients that they claimed to have on front of pouches.
Jonathan
Cause you're talking about this is like a pouch that is like says it's an apple pouch or like sometimes they
Dr. Federica Amarti
say, like complete meal, sweet potato and lamb pouch. Like they're not just the fruity pouches
Lucilla Poston
or the flavored yogurt preservatives and that have been heated to increase their shelf life.
Jonathan
So this is like ultra processed food. Hiding is like the best thing you can do for your child.
Dr. Federica Amarti
It's baby food. It truly is junk baby food, real junk food.
Jonathan
And should I therefore be worried about giving my child a piece of fruit? Because after all, that is also very high in sugar.
Lucilla Poston
It's not nearly as high.
Dr. Federica Amarti
And the whole fruit gives you all the fibre, all the phytonutrients. More children now know how to open these pouches and packets than they know how to peel a banana.
Lucilla Poston
You know, one of those pouches contains more sugar than the daily requirement of a child for the whole day, about three and a half cubes of sugar in one of those pouches. It's a scandal. And this is, I mean, probably one of the major factors follow on formula and these pouches is why our children, when they go to school, have such a high instance of obesity and dental caries.
Dr. Federica Amarti
Right?
Lucilla Poston
And dental caries is the other thing, because actually the sucking of these Pouches, very bad for teeth. And as you probably know, having all your teeth out when you're a young child is the most common operation in pediatrics at the moment in the uk.
Jonathan
Is there any single piece of actionable advice that you'd like to give to parents for their babies at the point, that is, after they're born? Just to wrap up with, and maybe
Podcast Host
start with you, Lucilla, to think about
Lucilla Poston
what you're feeding your child and to look on the packages that you are buying the content, because they will have it, but it's very poorly disguised at the moment. So be very conscious of the amount of sugar and the amount of salt that is in some of these products. But the most important thing is to feed natural foods, to feed fruit, to feed lentils, to feed, and to vary the food of your child. And so they have a wide breadth of a healthy diet.
Dr. Federica Amarti
Try to take this opportunity to enjoy food with your children. So make delicious meals with them, get them involved in preparation, get them used to seeing the whole foods so that in their minds and as they grow up, these whole foods become what they relate to as food. So the banana, the orange, the apple, the bean, the fish, get them used to as much as possible, whole food. Whole food ingredients. And drinking water. Make them drink water.
Lucilla Poston
Just water.
Dr. Federica Amarti
Not the juices? Yeah, just water.
Jonathan
I love it. We've covered a lot of different things, so I'm gonna just try and pick out the highlights. I think the thing that I start with is this idea that actually in the first thousand days you're almost built as a human being, which I hadn't really thought about, cause you're still very small. But actually what you're describing is so much is shaped and then it's just sort of getting a bit bigger. And that's part of why this is such an important time period that we now know that many of your long term health risks are actually going to be shaped by what's happened to you very early. Which I think it does mean that this is a really important period. And I think I'm really shocked. I think you said that in the UK, 9% of children at the age of four are already living with obesity. And I'm pretty sure that number would be even higher in the us.
Dr. Federica Amarti
It is higher in the us, yeah.
Jonathan
That this starts actually even before pregnancy, I think is another thing that is really sort of amazing to me that you're describing that if either of your parents are living with obesity, this can affect not just your chance of, of having a baby, but also affect health. But there's already things you can do in terms of your diet. You talked about folic acid multiple times. So I think one of my takeaways is, you know, if you're a woman, you definitely want to make sure that you're taking folic acid. But also things like smoking and drinking really have an impact. Then we talked about pregnancy and I thought what was interesting is I normally think about pregnancy as being all about how you must avoid certain foods. And you haven't once talked about avoiding food. You've really talked about making sure you're eating, like, the healthy food. And when you are talking about avoiding food, it's all about sort of avoiding junk food rather than, oh, my God, you mustn't eat a piece of steak. I think that's fascinating. And I think the other thing is we now understand a lot of the science of what's going on. So when a mother becomes pregnant, her blood sugar increases. That's natural. But because of the sorts of foods that we're eating today, many pregnant mothers actually, their blood sugar is becoming too high. And this is what you call gestational diabetes. And we now know that in the fetus, that raised blood sugar is actually getting into them. It's causing the fetus to put on more fat and that's then sending, like, hormones into their brain. It's literally reshaping their brain in a way that is going to be with them for life, which is basically going to make them hungry for junk food. So it's just like, I mean, as a food manufacturer, sounds brilliant. Like, I feed the mother this junk and the baby is already hooked on this stuff before it's even born. It's basically. This is what you're saying, Lucilla?
Lucilla Poston
Yes, effectively.
Jonathan
I think that the idea that we allow this not only to be legal, but to be advertised without restriction is extraordinary, as you describe that. And I think it also ties into our understanding of why so many of us are having to take GLP1s and things like this. If this is all the way back to, you know, what happened to us in the womb, it's not just about what you eat during pregnancy. However, I think it's really interesting how much you talked about physical activity, both in terms of being able to manage that sort of blood sugar excess, but also that just we now know that it's good for you in a way that I had no idea. The advice about what you should eat is actually very similar. Yeah, Federica. To the sort of advice that you talk about all the time here. And it's sort of the opposite of this processed food. It's this diet that's really good for your microbiome. And all these whole grains being very conscious here, it sounds like about half added sugar in. So, you know, we're never very keen on these sugary drinks and fruit juices. But here it's like much more important because it's not just you, it's thinking about, about the baby. And then at the end, we talked about, well, what happens at day 280 or so and you get the baby. And I took away two things. First thing is we've known for a long time that breastfeeding is good for the baby, but we now understand so much more about why. And that there's actually literally food in the breast milk that is only for the baby's gut. Bugs is wild. And then this example that like two hours after you experience like a cold virus, you could already be pumping antibodies in your breast milk to your baby is amazing. I think throughout this we talked about, like not feeling really guilty if you can't do this. And you said you're not gonna ruin your child forever by not being able to breastfeeding, but, like, not to give up and to try and make sure you've got the support you can to do that. And then we finished, I think, with the fact that the sort of food that again, food manufacturers are pushing for babies and young children is pretty shocking.
Podcast Host
And you said one pouch for a
Jonathan
baby that has this great label on it, but it's a complete meal, has more sugar than the entire requirement for the child in a day, and that our children do not need to eat these pouches. And that similarly follow on formula, which I wasn't so familiar with, is a huge problem. They don't need it at all.
Dr. Federica Amarti
It's a huge problem. It is, yeah.
Jonathan
Thank you so much.
Podcast Host
I wasn't expecting this to be such
Jonathan
a, like the food industry is really shocking episode, as I think it's turned out to be in my mind. It's really eye opening. I would like to maybe just wrap up again with a message for anyone who is listening to this, who's just an adult, like me, thinking, so my parents completely screwed me up and does that mean that there's nothing I can do and I should give up worrying about. About what I eat?
Lucilla Poston
What we've been saying is that you may get an increased risk by what happens in the womb, but what we haven't really talked about is how you can optimize that risk. As you grow up, as a child is growing up. And of course you can if you think you have a tendency to obesity, then all of the things we've been talking about, mothers and babies, apply as you grow up. So it's not the end of the world. You can actually mitigate against this. So it's, you know, it's just being aware that you might have that fundamental increase in risk and being particularly careful about what you eat and what your child eats. And it's as simple as that. It's not certainly it's not a doom message that we're trying to get across at all, but it's just a take care message. Much more important.
Podcast Host
As you can imagine hosting this podcast, running Zoe, Juggling Family life, it all
Jonathan
keeps me pretty busy.
Podcast Host
So I try as best I can to stay energized and show up well in all those parts of my life
Jonathan
life by fueling my body with the
Podcast Host
right food, by exercising, and by adding a scoop of daily 30 to my meals every day. If you haven't heard of Daily 30 yet, it's the gut supplement designed by our gut health scientists here at Zoe. It's made of over 30 high quality hand picked plants, including seaweed, fungi and different types of fiber. Better yet, it contains ingredients that support gut health, digestion and energy, which is ideal for packed calendars and busy lives. Simply add one scoop a day to any meal for an extra boost of fiber and plant diversity. And because it tastes delicious on just about anything and adds a satisfying crunch, it quite quickly slots into your life,
Jonathan
becoming a daily healthy habit you'll always have time for.
Podcast Host
By the way, whenever we talk about
Jonathan
Daily 30 as a good source of
Podcast Host
fiber, we're required to say that it
Jonathan
contains 4 grams of total fat per serv.
Podcast Host
Obviously that's all amazing healthy fats from plants, so order yours today@zoe.com daily30. Thanks for listening and see you next time.
Episode Title: The first 1000 days: The 5 ways early nutrition determines your future risk of obesity and heart disease
Guests: Prof Lucilla Poston (King's College London), Dr. Federica Amati (Head Nutritionist, ZOE)
Host: Jonathan Wolf
Release Date: March 26, 2026
This episode unpacks the critical importance of the "first 1,000 days"—from conception through a child’s second birthday—on long-term health risks such as obesity and heart disease. World-leading researchers Prof. Lucilla Poston and Dr. Federica Amati reveal how maternal and paternal nutrition, pregnancy, and early childhood diet have lifelong effects, and they separate science from myth with practical, actionable advice.
“If you work out the days, it’s the number of days in pregnancy plus the number of days up to the age of about 2. … It's a good way of thinking about vulnerability in mums and babies.” — Lucilla Poston (03:38)
“If the baby is born too large, there seem to be … longer term consequences, particularly with obesity.” — Lucilla Poston (10:57)
“If you are considering having a family, the most important thing is to try and get to a normal weight before you conceive and then a lot of this will go away.” — Lucilla Poston (14:55)
“Certainly the sperm can be affected by obesity in the father … the genetic makeup of the father's sperm can be affected.” — Lucilla Poston (16:30)
Essential Steps:
Nutrient-rich, whole foods diet focused on variety, especially plant foods (herbs, grains, pulses, vegetables).
Folic acid, iron, vitamin D are the most crucial nutrients (20:37).
Physical activity: Before and during pregnancy, moderate exercise (walking, swimming, yoga) is recommended; avoid starting high-risk activities (22:21, 40:09).
Avoid smoking and alcohol entirely; limit caffeine to one cup of coffee a day (22:20, 23:24).
Focus on adequacy, not perfection—diet need not be “optimized” to minute detail (27:41).
Quote on Diet Quality:
“The majority of the population would benefit from being aware of the issues about iron and folic acid and vitamin D.” — Lucilla Poston (20:37)
“The statistics are you’ll probably have a normal pregnancy because we’re talking about risk, increased risk. So please don’t panic.” — Lucilla Poston (23:57)
“What we're seeing is when they first go to school, they've got that fat, which they've probably had all the way through the first two and a half or four years of life.” — Lucilla Poston (35:37)
General Plate Model:
Foods to Avoid/Minimize: Sugar-sweetened beverages, processed "baby foods," excessive salt, alcohol, high caffeine.
Supplements: Folic acid, vitamin D (especially winter), iron if low, possibly iodine in certain countries (43:31–44:42).
Quote:
“Pregnancy nutrition requires adequacy, not perfection, not optimization.” — Dr. Federica Amati (27:41)
“Within two hours … the baby doesn’t get the cold.” — Dr. Federica Amati (46:11)
Real Foods: After breastfeeding/formula, move to a wide, varied diet including iron-rich foods, exposing babies to as many tastes and textures as possible (49:39–50:47).
Baby Food Pouches & Formula Critique:
“It truly is junk baby food, real junk food.” — Dr. Federica Amati (52:24)
Actionable Advice:
“Feed natural foods, … and vary the food of your child so they have a wide breadth of a healthy diet.” — Lucilla Poston (53:33) “Try to take this opportunity to enjoy food with your children. … Make them drink water.” — Dr. Federica Amati (53:59)
| Timestamp | Topic | |------------|----------------------------------------------------------------| | 03:38 | Defining the first 1,000 days and why they're vital | | 09:00 | Impact of birthweight and early nutrition on lifelong risk | | 10:57 | Evidence from Dutch famine study and overnutrition | | 14:55 | Importance of pre-pregnancy healthy weight | | 16:30 | Father's health effects on sperm and offspring | | 18:44 | Folic acid fortification and population-wide deficiencies | | 23:57 | Reassurance around risk versus inevitability | | 27:41 | Pregnancy diet: adequacy over perfection | | 32:42 | How high maternal glucose affects fetal brain development | | 40:09 | Safe physical activity in pregnancy | | 43:31 | Practical, actionable dietary advice for pregnancy | | 45:06 | Breastfeeding: nutritional and immune benefits | | 49:39 | Weaning and early childhood nutrition | | 52:24 | Hidden dangers of commercial baby pouches and formula | | 53:33 | Final pieces of advice for feeding young children |
For those new to this topic, the central message is empowering: focus on balanced, unprocessed food, physical movement, and supportive community and healthcare resources, both before and after birth. The impact of nutrition truly begins long before your child takes their first bite.