Fitness

Hydrogen peroxide in whitening treatments penetrates enamel and dentin, and alters tooth proteins. Christopher Intagliata reports.

Loss of collagen protein depletes renewal cells that serve as skin’s fountain of youth

A physician-scientist with crippling ALS says a so-called “polygenic score” could someday help patients like him alter the course of even the most terrible diseases

English lacks some words that other languages pack with meaning.

Bestselling author and fitness guru Brad Kearns joins Get-Fit Guy, Brock Armstrong, to explain how we can stay fit now, and well into the future

The discovery may have implications for treating acute and chronic pain

There’s a lot to consider when deciding what kind of meat to buy—or even whether to eat meat at all. The least we can do is start with accurate information

We don't yet know what the immersion in technology does to our brains, but one neuroscientist says the answer is likely to be that there's good, there's bad, and it's complex.

You've probably heard the word "metabolism," especially as it relates to weight loss or gain. But what is your metabolism, what does it do, and do you have any control over it?

The new drug, Zulresso, can work in days, not the weeks it takes for current treatments

It’s time to clear up some confusion about fruit, sugar, fructose and how this all fits together into a healthy diet

New studies take the most comprehensive look yet into immune system activity immediately after birth