Siddhartha Mukherjee, oncologist and author of “The Emperor of All Maladies,” asks: What if we change what a tumor can eat?

Do you have a friend who eats freely and stays the same, but you watch your portions and still gains weight? That gap often ...

If you’ve ever wondered why some people seem to burn calories effortlessly while others struggle despite eating well and exercising, the answer often lies in your metabolism. Your metabolism is the ...

My metabolism, it seems, has fallen off a cliff. I first noticed that things weren’t quite as they should be this past spring. After last year’s period of festive indulgence, I hit the gym again, ...

Fast food is a fixture of American life, with nearly a third of adults eating at least one on-the-go meal every day, according to the National Center for Health Statistics. For decades, convenience ...