Most people do "cleansing" because it sounds great! Wow, a way to "take a load" off kidneys or liver (our natural processors and filters), a way to "clean out" our colons, or a way to mark a change in our attitude, religious calendar, or life.

Guess what? Your kidneys work just as hard no matter what you eat. Your kidneys still filter the same amount of blood per minute and the solutes they remove for urine isn't metabolically different. Your liver is still processing fats -- ingested and already present -- into smaller and different macromolecules. Everything your gut absorbs gets dumped into the hepatic system for first pass metabolism, whether it's organic unpasteurized wonder fruit green algae superdrink or your usual lunch sandwich, and it takes the same amount of energy.

People say they feel different or better after cleansing. People feel better after a period of dedicated prayer, new athletic achievements, and an awful lot of different things. And sure you'll feel less constipated if you ingest a lot more fiber and fluids for a few days -- cleansing-style or not.

You're a cleansing machine EACH AND EVERY DAY. You don't need anything special to waste your money and time on, but if you truly feel better and it is not destructive, go ahead. (I would warn against "high colonic" anal irrigations, however, for a variety of medical reasons.) But re-evaluate WHY you want to do it and whether it is solely accomplished by doing a crazy diet alteration for a few days, and why you can't make sensible sustainable diet changes instead.