Real people, real journeys

A new review found vitamin D2 supplements may lower your vitamin D3 levels. Here's what that means, and how to check your label.

Every fat-loss plan works through a calorie deficit. Here's how big yours should be, how to work it out, and why "eat less" isn't the whole story.

Crunches won't flatten your stomach. Here's why belly fat is stubborn for women, and the four things that actually move it.