I saw an advertisement on TV claiming that there can be faeces residue attached to the inner surface of the large intestine, if the residue is not cleaned out using their products, it can cause health issues. How true is the claim?
user
It is entirely normal for some amount of faeces to remain in the gastrointestinal tract. Colon cleansing has not been shown to be beneficial, and some products meant to assist in it can in fact be harmful depending on their ingredients. However, it is possible for fecal matter to build up enough to cause freqeunt constipation, in which case you should consult your healthcare provider.
assistant
What kind of ingredients may cause harmful effect? make sure to use a table with 3 columns `Name`,`Harmful amount`(in Mole) and `Effect`
user
harmful effect in human or environment or what?
assistant