C (29:07)
The average serving of packaged salad dressing, get this. Has 6 grams of added sugar. That means you're eating over a teaspoon, about a teaspoon and a half of sugar in your salad dressing. Like why should you put sugar on your lettuce? Studies that link excess sugar to poor mental health are really abundant. This is not just my opinion. Again, all the things I'm talking about in this health bite, in all the health bites are from the peer reviewed literature. All the references are included in the show notes. Have a look yourself if you don't believe me. It's pretty scary out there, but what I'm saying is actually based in science. Now here's a study that looked at a large group of people. It was a meta analysis of observational studies. So it wasn't cause and effect, but it was a pretty impressive study. So it gives you things that point in the right direction. They looked at 37,000 people with depression and they found that sugar sweetened beverage consumption was dramatically increasing the risk for depression. Those who drank the most soda had a 31% increased risk for depression compared to those who drank the least. So basically, if you're a big soda drinker, you're more likely to be depressed compared to those who did not drink sugars in beverages. Those who drink two cups of soda per day, about 45 grams of sugar, which is 11 teaspoons of sugar, increased their risk by about 5% for depression. Those who drank three cans. Right. So you look at the dose response on these studies. So one can bad, is two cans worse? There's three cans, so you kind of can see where the trend's going. But Those who drank three cans of soda a day, which is 98 grams of sugar, which is like, I don't know, almost 25 teaspoons of sugar, increased their risk by 25% for getting depressed. Another study, a Prospectives cohort study out of Spain, 15,000 Spanish university graduates, showed that those in the highest quartile of added sugar intake had an increased risk of depression, meaning those who had the most sugar in their diet, those who consumed the highest amounts of Sugar had a 35% higher risk of depression. Comparing it to those who had the highest intake of high quality carbs from whole grains, high in fiber, low glycemic diet, those people had the opposite. They had a 30% lower risk of depression. Right. So more sugar, more depression, less sugar, less depression seems like a trend. Another large prospective COHORT study of 70,000 women, postmenopausal women published in the American Journal of Clinical Nutrition. So they looked at glycemic index, and the highest glycemic index mean the higher the likelihood of food it was to spike your sugar, there was a 22% increased risk of depression if you had added sugars. Right. The added sugars that are added to the food, there was a 23% higher risk of depression. And refined grains, even wheat. Right. Flour, that also was associated with depression. And if you had higher amounts of fiber or fruit or veggies or even lactose, was significantly associated with a lower risk of depression. So sugar and flour, higher risk, whole foods, lower risk. Not surprising. All right, so let's talk about the why. Why does this happen? We're seeing the correlation, we're seeing the connection. People know you get the sugar blues. You know, people understand that mood and sugar are very connected, even through their own experience. But what's the science behind how sugar affects our brain health, affects our mood, and obviously other things. But You've heard me talk a lot about other things, but we're going to talk about sugar and the mood and brain function today. So one is you get reactive hypoglycemia and we'll talk about what that is. But essentially it's where you get a spike in sugar followed by a spike in insulin that then causes your sugar to crash. And then what happens is you overshoot and you get low blood sugar. Now what happens when you get low blood sugar is you get a spike in cortisol, spike in adrenaline, and it helps bring the blood sugar back up, but it also increases the activity of the amygdala. So cortisol will increase amygdala activity, which is our emotional, anxious brain. And it's interesting, the symptoms are pretty obvious for people who have this, but you get cravings for carbs and sugar just a few hours after eating. That's kind of a mild symptom. You can have really serious feelings of anxiety, fear, anger, irritability, panic attacks, Dr. Jekyll and Mr. Hyde. I mean, people have heard of being hangry, right? I get that a little heart palpitations, shakiness, shortness of breath, feeling you're going to faint, like you're going to die, brain fog, fatigue, headaches. And so what happens is when blood sugar drops, it's a life threatening emergency. You got to find food right away. And I just tell you a quick story of a guy who told me that he was having these panic attacks and he was like, yeah, every day, the afternoon I start getting this overwhelming feeling of anxiety, I start sweating, I can't breathe, my heart's racing, I just feel like I'm going to die. I said, and what happens? Well, I drink a can of Coke and it goes away. So I think most people don't even connect the dots between what they're doing and how they feel. So now what happens if you continue to do this? You get insulin resistance, right? If you keep having sugar over time and it'll drive your sugar up, your insulin up. And high levels of insulin resistance has a really significant negative effect on mood and mental health. And the data is really clear on this, we'll go through the research. But essentially what happens with insulin resistance is you get inflammation in the body. And anything that causes inflammation will cause depression or anxiety or mood disorders. So what is the kind of link between insulin and metabolic dysfunction and mood disorders like depression, anxiety? Well, researchers from Stanford, they looked at a nine year study over time in the Netherlands, published in the American Journal of Psychiatry and they found that those who got pre diabetes during the first two years of the study were more than two times as likely to to have major depression versus those who had normal blood sugar. So in other words, when they follow people over a long period of time, if you were more likely to have prediabetes, you're going to get more depression. So you don't even have to have diabetes. Now. They measured the degree or severity of insulin resistance and they used something called the triglyceride HDL ratio, which by the way is available on everyone's test. Your ratio should ideally be 1 to 1. If it's more than 2 to 1 for triglycerides to HDL, you're starting to get into trouble. But if they had a higher ratio of triglycerides to HDL, there was an 89% increase in new cases of major depression. Think about that. For every 5 centimeters of belly fat just around your waist. Right. If you take a tape measure, then that was associated with 11% higher risk of depression and every slight increase in this one unit increase in the ratio of triglyceride to hdl. And for every bump in fasting glucose, that was linked to a 37% higher risk of depression. So as your sugar goes up, your insulin goes up. More depression. Conservatively, at least one in three people have insulin resistance, but I think it's a lot more. I mean, if you look at the data, one in two people have either prediabetes or type 2 diabetes by very conservative measurements. If you open up those measurements a little bit and don't just look at deviations from the worst level. Right. Like if your blood sugar's over 100, you're pre diabetic. Well, maybe you don't even have to have 100 to actually have insulin resistance. And so that goes to the 93.2% who are metabolically healthy. So maybe even 90 plus percent have some degree of this. Right. One in five adults on top of that have a mental health issue. Right. That's a lot. That's 20% of the population. If you have diabetes, you're 20% more likely to have anxiety and you also have more depression. So how does this work? Well, low grade systemic inflammation from any source, and mostly in our case it's the diet. And sugar is the biggest driver of inflammation because sugar is like pouring gasoline on the fire. So the problem with insulin resistance is that it causes low grade systemic inflammation everywhere in the body and the brain. And that causes dysregulation of cortisol, which is A stress hormone dysregulates what we call the HPA axis, which is the hypothalamic pituitary adrenal axis, regulating all sorts of things like mood. It screws up neurotransmitter signaling. When you have too much sugar, like serotonin and dopamine, it leads to energy problems in the cell, which you need good energy to have good mood, right? So actually, this friend of mine, Casey Means, she wrote a book called Good Energy, all about metabolic function and mitochondrial function and how that relates to our health and mood. Now, the brain relies mostly on glucose as its primary source of energy, but it's extremely energy efficient. It only needs about 60 grams a day to do its job. And flooding the brain with too much glucose creates a lot of inflammation, oxidative stress, and insulin resistance. And it leads to depression and mental health issues and even things like Alzheimer's, which now they're calling type 3 diabetes. So when you have too much sugar, it screws up your ability to make energy and it causes mitochondrial dysfunction. Mitochondria are really important for neurotransmitter function and production and the release of neurotransmitters in the body. When you have sugar, it also does something really bad. It activates stress responses in the body. So when you look at the data on this, it's pretty clear. David Ludwig, my friend at Harvard's done a lot of work on this, and he basically showed that feeding kids isocaloric, meaning same calories of, let's say, oatmeal, which basically turns into sugar in your body or eggs, that the ones who add the oatmeal had higher levels of cortisol and adrenaline because their bodies were having this perceived stress of eating too much sugar. Now, that's kind of scary. We know that independent of your mental state, that your diet can make you stressed, right? Can increase stress hormones, and that is bad for your brain. Insulin also helps regulate neurotransmitters like serotonin and dopamine, and also something called bdnf. And when you have too much insulin resistance, which is what most America is suffering from, it impairs dopamine signaling, which means you don't get the pleasure sensation, which means you want more sugar and create more carbs. And it's a vicious cycle. Also, stress itself will increase cortisol, just emotional stress, and that can cause issues. So it can be that the sugar causes stress or that actually, literally stress causes stress, and that stress will spike your cortisol. And what does that normally do? When you have a stressful situation, like you're being chased by a tiger, you want to increase your blood sugar. You want to have all the fuel available so you can run as fast as you can. So that's a good thing. You want to have more adrenaline, but not chronically. And so you have chronically elevated cortisol in your body from chronic psychological stress. That increases your blood sugar, it increases insulin resistance, and it's a vicious cycle. So if you give someone prednisone, for example, for an autoimmune disease, they can develop diabetes and they can develop high blood pressure just from the stress hormone that they're giving as a pill. And also, stress really messes up your gut. And gut is another factor that is influenced by our diet and particularly sugar. Now, we've talked a lot about the microbiome and mental health on the podcast. I've written about this a long time ago in my book the Ultra Mind Solution. Again, the data has been there for a long time. It's mostly been ignored, but I think I'm glad people are talking about it now. There's a whole department of nutritional psychiatry at Harvard where they're talking about metabolic health and the gut health and mood health. And Uma Naidu has been on the podcast. We'll link to the show notes there. But just to get into this around mood, you know, when you have a high sugar starch diet, it has a really bad impact on your microbiome. So it changes the composition of bacteria in there to be bad bugs. Those bad bugs reduce the abundance of good bugs which do good things. And the bad bugs do bad things. And that creates inflammation. Leaky gut, yeast overgrowth, bacterial overgrowth, all that can lead to mood swings, irritability, depression. There's something called the bacterial endotoxin. So when you have too many bad bugs, it produces the toxins that, that basically get into your system through a leaky gut and that triggers your immune system to create an inflammatory response and that impacts the brain. It also makes you more insulin resistant, so it creates a vicious cycle. So gut health is extremely important for brain health and for mood health. And when you look at the data on this, it's very compelling. Leaky gut, which we used to get laughed at for talking about, is now well recognized. Increased intestinal permeability. But it's been linked to things like anxiety, depression, schizophrenia, and lots of other mental illnesses. And it's actually fixable. Okay, so we know that we're all eating too much sugar. We know that sugar is linked to mental health issues. We know that the mechanism is there through inflammation, insulin resistance and gut dysbiosis and mitochondrial function. Great, now what? Well, you can do a sugar detox. That's what. You don't have to take my word for it. You don't have to listen to me. Your body's the smartest doctor in the room. It'll tell you what's working, what's not working. And listen to your body. It's very smart. And listen to how you feel. I encourage everybody to do this. It's why I wrote my book, the 10 Day Detox Diet. I think 14 days is a little longer and I encourage you to do that a little longer just to see what happens. But let's talk about how to do it. First thing is you've got to get rid of all the flour and sugar, right? Get rid of all the high glycemic foods, get rid of all the added sugar, get rid of ultra processed food. Stop all the refined flours, refined wheat flour, gluten, all those things, get rid of those. My joke for bread is if you can stand on it, it doesn't smush, you can eat it. I was in Germany and they had these meat slicers in the house. I'm like, what is that for? He says, well, to slice the bread because it's so dense, it's made from whole grains. It's not made from flour, it's made from actual rye and grains. So you have to cut it with a meat slicer, like a deli meat slicer. I encourage also people to get rid of all the liquid sugar, calories. Those are the worst sugar sweetened beverages, teas, coffees, energy drinks, you name it, juices, just eliminate all of that. And what do you eat? Well, real whole food, what I've been talking about for years. You can do the 10 day detox, which is a little more extreme. But essentially they're blood sugar balancing foods. And the way to do that is start with protein at every meal a bit. Not a huge amount, but about a palm sized portion, depending how big you are. It's different size, right? If you're Shaquille o', Neal, it's different than if you're Natty Cominici, who, you probably don't know who that is, but she was a very famous gymnast in the, in the 70s. She was very little, like 4, 11 or 10 or something. But basically you want to eat the palm size portion of protein every meal, usually about 4 to 6 ounces. You want to aim to eat about Your body weight in grams of protein, depending on how active you are, anywhere from half to one gram of protein per ideal body weight. You want to get really good quality protein. So regeneratively raised meats, I use force of nature. I love them. You can get bison, elk, venison, even beef. Pasture raised chickens and eggs. Certain fish can be great if they're small fish, you know, the smashed fish for me is a small salmon, mackerel, anchovies, herring and sardines. Of course, people don't like those, but.