Medically reviewed by Suzanne Fisher, RD Fad diets have existed for hundreds of years, promising a quick fix for people ...

A balanced diet isn't a mix of good and bad foods, as some think. Doctors describe how to make food that's nutritious, ...

As no single food provides all of the body's required nutrients, an individual's diet should be balanced across a variety of foods. Individual foods are not necessarily healthy or unhealthy.