Juice and vegetable fasts are used to lose weight, gain energy, and detoxify the body from the harmful effects of digestion and environmental toxins.

Juice fasts are not intended to be a long-term weight loss solution. In fact, many proponents of juice fasts claim that it shouldn't be used to lose weight at all, instead focusing on its value as a detox program.

Most juice fasts last one to five days. The only foods allowed are 100 percent fruit and vegetable juices, sometimes diluted with distilled water. Organic, freshly squeezed juices are preferred, and all juices should contain no salt, sugar or additives .

• This plan is simple to follow because the choices are so limited.
  
  
• The one food you're allowed to eat (or drink) is perfectly healthy.
  
  
• You'll lose weight quickly because of the very low calorie intake, although weight loss is not usually the goal of fasting. Many people believe that juice fasts allow the body to rejuvenate and heal itself.
  
  
• Many people feel refreshed and revitalized after a juice fast.

• There is no doubt that, with this extremely low-calorie diet, combined with zero protein, complex carbohydrates and fat, you'll quickly feel weak and disoriented.
  
  
• You have to be pretty committed to the program to stick with it. You will get hungry. Very hungry.
  
  
• Juice fasts shouldn't be followed for longer than five days, which means they are not a permanent weight-loss solution.
  
  
• Any weight that is lost during a juice fast is usually regained soon afterwards.
  
  
• For reasons that aren't completely understood, the vast majority of people who go on a juice fast experience an excruciating migraine-like headache known as a "detox headache."