Raw Food DietZone diet

The Zone diet was invented by Barry Sears. The program's main tenet is that the body requires an optimum ratio of carbohydrates, protein and fats: 40 percent, 30 percent and 30 percent respectively. This ratio will help you to stay in a healthy zone, as determined by hormonal influences in your body.

Which celebs have been on it: Jennifer Aniston, Rene Zellweger and Brad Pitt.

More celebrity & popular diets

Check out the latest, the greatest, the weirdest and the wackiest diets that are or have been popular: Atkins Diet : 5 Factor Diet : The Maple Syrup Diet : Dr Joshi's Holistic Detox Diet : The Hampton's Diet : The 3-Hour Diet : The Macrobiotic Diet : The Raw Food Diet : The Zone Diet : The Blood Type Diet : The Geno Type Diet : The Sugar Busters Diet