That headline is misleading and potentially unsafe. There is no evidence that the average person has 15 kilograms (33 lb) of “waste” sitting in the colon that can be removed overnight. Your colon normally contains stool at different stages of digestion, and the body continuously moves and eliminates it.
Medical bowel cleansing does exist, but it is primarily used for procedures such as colonoscopy and is done with specific, medically directed bowel preparations. These cause substantial diarrhea and fluid loss and aren’t intended as routine “detoxes.” NIDDK+1
A safer, evidence-based version
Think You Need a Colon Cleanse? Here’s What You Should Know First
Your colon doesn’t need a routine overnight detox. If you’re constipated, safer approaches may include gradually increasing dietary fiber, drinking adequate fluids, staying physically active, and using an appropriate constipation treatment when needed.
Avoid aggressive “colon cleansing” recipes, repeated enemas, or large doses of laxatives without medical guidance. They can cause dehydration and electrolyte problems and may be particularly risky for people with certain medical conditions or those taking medications.
If constipation persists despite self-care—or you develop blood in the stool, constant abdominal pain, vomiting, fever, inability to pass gas, or unexplained weight loss—seek medical advice rather than attempting a cleanse. NIDDK
Bottom line: You don’t need to remove “15 kg of toxins” from your colon overnight. A healthy digestive system already has mechanisms for moving and eliminating waste.
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