From the website of Dr. Steven Barrett M.D. who is vice-president of the National Council Against Health Fraud:
...Some approaches to "detoxification" are based on notions that, as a result of intestinal stasis, intestinal contents putrefy, and toxins are formed and absorbed, which causes chronic poisoning of the body. This "autointoxication" theory was popular around the turn of the century but was abandoned by the scientific community during the 1930s. No such "toxins" have ever been found, and careful observations have shown that individuals in good health can vary greatly in bowel habits. Quacks may also suggest that fecal material collects on the lining of the intestine and causes trouble unless removed by laxatives, colonic irrigation, special diets, and/or various herbs or food supplements that "cleanse" the body. The falsity of this notion is obvious to doctors who perform intestinal surgery or peer within the large intestine with a diagnostic instrument. Fecal material does not adhere to the intestinal lining...
...Some approaches to "detoxification" are based on notions that, as a result of intestinal stasis, intestinal contents putrefy, and toxins are formed and absorbed, which causes chronic poisoning of the body. This "autointoxication" theory was popular around the turn of the century but was abandoned by the scientific community during the 1930s. No such "toxins" have ever been found, and careful observations have shown that individuals in good health can vary greatly in bowel habits. Quacks may also suggest that fecal material collects on the lining of the intestine and causes trouble unless removed by laxatives, colonic irrigation, special diets, and/or various herbs or food supplements that "cleanse" the body. The falsity of this notion is obvious to doctors who perform intestinal surgery or peer within the large intestine with a diagnostic instrument. Fecal material does not adhere to the intestinal lining...
