Juice fasting is commonly used (rather than water alone) as a mild and effective cleansing plan; this is suggested by myself and other doctors and authors and by many of the European fasting clinics. Fresh juices are easily assimilated and require minimum digestion, while they supply many nutrients and stimulate our body to clear its wastes. Juice fasting is also safer than water fasting, because it supports the body nutritionally while cleansing and probably even produces a better detoxification and quicker recovery.

Fasting (cleansing, detoxification) is one part of the triology of nutrition; balancing and building (toning) are the others. I believe that fasting is the "missing link" in the Western diet. Most people overeat, eat too often, and eat a high-protein, high-fat, rich-food, building and congesting diet more consistently than they need. If we regularly eat a more balanced and well-combined diet, such as my Ideal Diet, we will have less need for fasting and toning plans, although both would still be required at certain intervals throughout the year.

In a sense, detoxification is an important corrective and rejuvenative process in our cycle of nutrition. It is a time when we allow our cells and organs to breathe out, become current, and restore themselves. We do not necessarily need to fast to experience some cleansing, however. Minor shifts in the diet such as including more fluids, more raw foods, and fewer congesting foods will allow for better detoxification; for a carnivore, for example, a vegetarian or macrobiotic diet will be cleansing and purifying. The general process of detoxification is discussed thoroughly in the General Detoxification program; here we focus on fluid fasting—its history, therapeutic use, benefits, contraindications, and, of course, how to do it, along with other aspects of lifestyle that support fasting.

Fasting is a time-proven remedy. Its use goes back many thousands of years, really to the beginning of life forms. As a healing process and spiritual-religious process, it has continued to be more intelligently applied, we hope, in the last several thousand years.

A balanced, low-calorie diet with lots of exercise is still the best way to reduce and maintain a good weight and figure. Many obese people are also deficient in nutrients because they eat a highly refined, fatty, sweet diet. Often, these obese people are fatigued, and they need to be nourished first before they will do well on any fast.