Although there are many weight-loss diets, statistics show that most people who lose weight on a diet regain that weight, and sometimes they gain more. The best ways to stay healthy are eating well and being physically active.
You can eat almost anything you want on moderate diet programs, just not as much as you want. Balance and calorie control are what's important—you don't eat too much of one thing or too little of another.
For more information, see the topic Weight Management.