Eat an enema?
A Chinese-American magazine, written by Chinese speakers, contained this advice to prevent rectal cancer:
“We should accept proctoscopy at least once every 5 years from 50. And it should be done first at 21 if your certain relative is suffering from it. Then the internal time for next should be shortened. There are 2 kinds of examinations like S-shaped colonoscopy and proctoscopy. 1 or 2 Days before a proctoscopy, you should eat more liquid food and drink water for cleansing rectal. If for S-shaped colonoscopy, it will be good to eat 2 enemas that day. Once there is polyp found in proctoscopy, the doctor will collect a biopsy sample at once and then take into laboratory room to see whether there is cancer. If there is some unusual got in S-shaped colonoscopy, you should do a further proctoscopy.” — China Life, Leleman Lake, March 2008, page 77