What are some dangers associated with colon cleansers?

Some dangers associated with colon cleansing include harmful side effects such as nausea, vomiting and kidney failure, according to WebMD. Additionally, people may become dehydrated and are at a greater risk for bowel perforations and infections, states Mayo Clinic.

The human body is designed to detoxify itself, notes WebMD. A healthy human being has no reason to perform a colon cleanse. Some people state that undergoing a colon cleanse gives them a boost of energy, but several studies showed little benefit. However, a person who is constipated without any other medical diagnosis may benefit from a colon cleanse performed by a trained therapist using FDA-approved instruments.