A form of detox diet, in which nutrition is obtained solely from fruit and vegetable juices. The health implications of such diets are disputed.
Juice fasting (also known as "juice cleansing") is a controversial fasting method and a detox diet in which a person consumes only fruit and vegetable juices to obtain nutrition while otherwise abstaining from food consumption. The health benefits are unproven, with many health professionals considering them dangerous. Juice fasts may last anywhere from a few days to several weeks. The juice consumed during a juice fast is not the type commercially available, but rather that produced from freshly juiced fruits and vegetables.
Some practitioners fast bi-annually in week-long (or longer) periods to attempt to purify the body in synchronization with what they believe to be annual cycles of nature. Fasts may even involve retreats and travel, such as with popular week-long spa-resort style trips to Thailand.
Because pure juice contains little to no fiber, juice fasters often use an enema or an herbal or saltwater laxative during the time of fasting to efficiently expel waste from the intestines and colon. Another method to achieve this effect involves mixing psyllium husks in with the juice. Because psyllium is not absorbed by the body, but greatly increases in volume upon water absorption, it creates the bulk necessary to facilitate evacuation.