Any homemade remedies for colon cleansing?

I thought colon cleansing was a benifit but now I am told that
it is not and if that is a true "fact" and if it hurts people more than how much it benifits and even kills people then why
is it still sold on the market?

I would appreciate (if this statement about colon cleansing being negative is true) a "TRUSTWORTHY" website that shows "facts" rather than opinions about colon cleansing.

Thanks a lot!

It happened to Gwenyth Paltrow's dad…he had colon cancer, overcame it and then passed from a massive heart attack. The same thing happend to my grandfather. Does anyone else know of a similar circumstance?

how long would it take for a human to completely clean out thier insides? by insides I mean intestines.

I want to do a simple, safe bowel and / or liver cleanse but I need one that is safe to while on a beta-blocker for HBP. Any ideas?

Do you know any people living with it? Well, I am undergoing that surgery tomorrow and I dont know how life is after that and I wanted to know how it is. I dont trust my Doctor very much. I think they are just experimenting with me. So any informating would be valuable.