The Science of Looking Younger, Longer | Episode 6

The rate of nail growth decreases about half a percent per year. And if you measure that, it's a really good indicator of how old you are biologically.

The rate of your nail growth is a really good indicator of how you're aging or not aging.

A little bit of sunlight isn't going to hurt you. In fact, you need it ... But you can overwhelm the system. So, if you actually get sunburned, you get red, there's inflammation, swelling of the skin, tenderness, then you know you've overdone it.

What's in the literature on antioxidants is kind of depressing for longevity. Over the last 30 years, a lot of different antioxidants have been tried—ingesting them, injecting them, genetically modifying mice, putting it on skin—very few results, if any.

I'm actually working on a way to boost NAD in the skin. That product's not ready for prime time yet, but already people have figured out that if you boost NAD levels, it's good for the skin.

We foresee a day, in my lab, where you can take a pill, maybe three pills, and you'll not just get younger, but your hair will regrow and become dark again if you want it to.

We've evolved, as a species, to have children up until the age of about 30, and then we should stop. Why? Because having kids as a woman is very dangerous.

The health of your skin is super important for the health of the rest of your body and vice versa.

If you can keep yourself looking good by doing the right things, you'll probably end up living longer, too.

13% of the US has a foot ulcer right now.