That headline makes a false and potentially unsafe claim. There is no evidence that a person can have “15 kilograms of waste” sitting in their colon and safely flush it out in one night. The colon naturally moves stool through the digestive tract, and routine “detox” colon cleanses aren’t medically recommended. (Mayo Clinic)
A safer, evidence-based version would be:
Can You Really Clean 15 Kilograms of Waste From Your Colon in One Night?
Claims about having kilograms of “old waste” stuck inside the colon are common online, but they don’t reflect how the digestive system normally works.
Your colon continuously moves stool toward the rectum. The amount of stool in the digestive tract varies considerably depending on what you’ve eaten, how much you drink, how quickly your intestines move and whether you’re constipated. There is no established medical basis for the idea that everyone carries 15 kilograms of accumulated waste that needs to be removed.
What about a colon cleanse?
Colon cleansing involves flushing the large intestine with liquid, sometimes through an enema or colonic irrigation. These procedures have legitimate medical uses—for example, bowel preparation before certain procedures—but using them simply to “detox” the body isn’t supported by good evidence. Your digestive system already eliminates waste and your body has its own systems for processing and removing substances it doesn’t need. (Mayo Clinic)
Colon cleansing can also cause problems, including cramping, bloating, diarrhea, dehydration, electrolyte disturbances, infection and, rarely, bleeding or perforation. The risks can be particularly concerning for people with kidney or heart disease. (Mayo Clinic)
If constipation is the real problem
If you’re having difficulty passing stool, the goal isn’t to “empty 15 kilograms” overnight. Instead, the cause of constipation should be addressed.
Helpful measures can include:
- Eating enough dietary fiber from fruits, vegetables, beans and whole grains.
- Drinking adequate fluids.
- Staying physically active.
- Responding when you feel the urge to have a bowel movement.
- Establishing a regular bathroom routine.
These measures are commonly recommended for preventing and managing constipation. (Mayo Clinic)
Some over-the-counter laxatives can also be useful for occasional constipation, but they should be used according to their instructions. Overuse can cause complications and, with some products, dependence or worsening bowel function. (Mayo Clinic)
When constipation needs medical attention
Don’t attempt an aggressive “cleanse” if constipation is accompanied by persistent abdominal pain, vomiting, blood in the stool, black stools, unexplained weight loss, or a major change in bowel habits. These symptoms warrant medical evaluation. (Mayo Clinic)
The bottom line
There is no safe, evidence-based method for removing “15 kilograms of waste” from a healthy colon overnight. If you’re constipated, treating the underlying problem is much safer than attempting a drastic detox or colon cleanse.
A better headline: “Think You Have ‘Years of Waste’ in Your Colon? What the Science Actually Says.”
