Earlier this year, the Food and Drug Administration approved a new weight-loss procedure in which a thin tube, implanted in the stomach, ejects food from the body before all the calories can be absorbed.

I’ve been eating a high-fat, carb-restricted diet for almost 20 years, since I started as an experiment when investigating nutrition research for the journal Science. I find it’s easy for me to maintain a healthy weight when I eat this way. But even after two decades, the sensation of being on the edge of a slippery slope is ever-present.

Many people can rattle off the names of the most popular vitamins and the foods that contain them in abundance.

In 1863, Dr. James Caleb Jackson, a staunch nutrition advocate, created the world’s first recipe for what would become granola.

Do I absorb more sugar and calories when I drink fruits and vegetables in a smoothie as opposed to just eating them whole?

A vegetarian diet, especially one that includes fish, significantly reduces the risk of colorectal cancer, a large new study reports.

People who avoid carbohydrates and eat more fat, even saturated fat, lose more body fat and have fewer cardiovascular risks than people who follow the low-fat diet that health authorities have favored for decades, a major new study shows.

Chronic constipation is an all-too-common problem rarely discussed in polite company and only reluctantly mentioned to doctors during checkups.