The Chinese medical community is so convinced of its efficacy for bowel disorders, including cancers, that when you are diagnosed, the first thing they do is pour in strong green tea in *both* ends. And they don't stop doing it.
I'm reminded of the story of the old man prescribed hot tea enemas for theraputic reasons. When they turned on the nozzle, he pursed his lips and made a disapproving sound.
"What?", asked his nurse, "Too hot?"
"No," he replied. "Too sweet!"
LOL...but think...how gross would it be to have taste buds in your anus?
uuuggghhhhhhhh