Colon Detoxification

The internet is full of colon cleansing methods that tout the benefits of colon detox. I saw one website that showed long "worms" that live for years in the colon that "need" to be removed with special expensive potions. One of the most common questions for GI doctors is about colon cleansing and if it is beneficial. I don't know any physicians who believe the colon needs "detoxification" or