Colon cleansing (also known as colon therapy) encompasses a number of alternative medical therapies intended to remove feces and nonspecific toxins from the colon and intestinal tract. Colon cleansing may take the form of colon hydrotherapy (also called a colonic or colonic irrigation) or oral cleansing regimens such as dietary supplements. During the 2000s internet marketing and infomercials of colon supplements increased.

Some forms of colon hydrotherapy use tubes to inject water, sometimes mixed with herbs or with other liquids, into the colon via the rectum using special equipment. Oral cleaning regimes use dietary fiber, herbs, dietary supplements, or laxatives. People who practice colon cleansing believe that accumulations of putrefied feces line the walls of the large intestine and that these accumulations harbor parasites or pathogenic gut flora, causing nonspecific symptoms and general ill-health. This "auto-intoxication" hypothesis is based on medical beliefs of the Ancient Egyptians and Greeks and was discredited in the early 20th century
The following are the advantages of colon hydrotherapy:

  • It relieves digestive discomfort, such as gas, abdominal pain, constipation, and bloating.
  • It clears parasites that could live in the colon.
  • People with acne, psoriasis, and other skin conditions may find this treatment beneficial.
  • It detoxifies the body from drugs and alcohol.
  • It is essential before a bowel surgery.
  • Colon hydrotherapy may sound scary because the process seems painful, but it actually is not. When undergoing a session, here are the things you should keep in mind:
  • You should avoid drinking sodas and eating fatty foods.
  • You should not eat at least two hours prior to therapy.
  • You should not drink any liquid at least an hour before therapy.
  • You should keep a positive outlook and not be afraid.