Transcript
Capital One Advertiser (0:00)
If you love to travel, Capital One has a rewards credit card that's perfect for you. With the Capital One Venture X card, you earn unlimited double miles on everything you buy. Plus you get premium benefits at a collection of luxury hotels when you book on Capital One Travel. And with Venture X, you get access to over 1,000 airport lounges worldwide. Open up a world of travel possibilities with a Capital One Venture X card. What's in your wallet?
Capital One Terms Announcer (0:26)
Terms apply. Lounge access is subject to change. See capitalone.com for details.
Alltrails Advertiser (0:33)
Out here, it's not only the amazing views, but the way time stretches out a little longer, how laughter bellows louder among friends, and how the breeze hits just right at the summit. With Alltrails, you can discover and experience the best of nature with over 450,000 trails worldwide and navigation right at your fingertips. Find your outside with Alltrails. Download the free app today and find.
Thumbtack Advertiser (0:58)
Your next outdoor adventure avoiding your unfinished.
Dr. Samantha Meen (1:01)
Home projects because you're not sure where to start. Thumbtack knows home, so you don't have to don't know the difference between matte paint, finish and satin or what that clunking sound from your dryer is. With thumbtack, you don't have to be a home pro, you just have to hire one. You can hire top rated pros, see price estimates and read reviews all on the app. Download today.
Dr. Clay Rutledge (1:24)
You know that feeling when a familiar song from your childhood comes on the radio? Maybe it's that one that played during family road trips, or that class anthem everyone belted out during Friday Night football games. As soon as you hear it, the memories come rushing back. Suddenly you're right there again, arm in arm with your besties, swaying and laughing. But what if that bittersweet rush is more than just a fleeting connection to the past? What if nostalgia actually plays a powerful role in shaping our sense of meaning, motivation and well being? Senior producer Teresa Carey chats with Dr. Clay Rutledge about how nostalgic feelings can impact depression, foster a sense of purpose, and even help us navigate difficult times. Now I know Teresa is a nostalgia skeptic, so let's see if you changed her mind about nostalgia. After the conversation, we'll also tackle a question every new parent has why do babies cry? And just a heads up, you might find yourself rummaging for old socks to fill with rice. After this episode, I'll tell you why I'm learning to juggle. And no, I'm not running away with the circus. I'm Dr. Samantha Meen and this is Curiosity Weekly from Discovery As a certified auntie, Geltu Chachi Zia tant to many adorable cuties. One of the biggest struggles I hear from my friends with newborns is the stress and heartache when the baby won't stop crying despite all their efforts. And to make it worse, the comparisons people in laws make between parents to try and cast blame. It's a lot. Well, a study out of Sweden might just be the clapback you've been looking for. This is one of the first studies ever to look at genetic and environmental influences on a baby's crying in the first few months. To tease apart the genetic aspects of crying, the researchers focused their analysis on identical and fraternal twins. Identical twins develop from the same fertilized egg that splits into two embryos, so they share nearly all of their genetic makeup. Fraternal twins, on the other hand, come from two different eggs fertilized by two different sperm, so they share about half of their genes like regular siblings. In this study, the twins were in the same household environment at the same time. Lovely built in control. So if identical twins have similar crying behaviors, it strongly suggests that genetics plays a role since they have the same DNA. The team recruited almost 1,000 new twin babies. And their parents, of course, wasn't just the babies in the study. Then they sent the parents questionnaires asking about the child's sleep and crying habits and their ability to settle. Parents answered the same questionnaire when their babies were 2 months old and then again at 5 months old. The results of the study suggest that genetics account for about half of the variation between how long babies tend to cry for at two months and up to 70% by five months. This doesn't mean genetics determine why babies cry, but instead it shows genetics influence how much longer some babies tend to cry for versus others. You may have seen headlines like why your baby cries. It's largely written in their genes and and while there's some truth to genetics playing a role, these headlines can be easily misunderstood. Heritability estimates refer to the percentage of differences between how long a baby cries for that can be explained by genetics. That's a lot to think about, but it means that genetics set a baseline tendency for some babies to cry for more or less time compared to others. But what it does not mean is that half of why babies cry is caused by their genesis. Plus, the study had limitations. It relied on questionnaires from only about 500 parents who were juggling documenting everything while caring for twins. Which means the results should be taken with caution. So the truth is, we shouldn't let catchy headlines make you feel like crying is just in the genes and completely out of our hands. Though it might be helpful to know that some babies just cry more. And in your very sleep deprived state, maybe you'll find some comfort in knowing the genetic component of might mean you caused your parents the same stress.
