I don’t see how much mangosteen skin powder was used, but to make up for the pure fiber part of the skins, they gave cellulose to the control.
The mangosteen skin powder is not strictly fiber.
I ordered a kilo of it to give it a try for a few months. The last article I read stated it was very good to treat colon cancer.
Ten years ago I had pretty bad colon cancer. My father died of prostate cancer. I’m a Guinea pig.