Myth #3 

There are no definitive studies that confirm or substantiate this claim.  The body only absorbs about as much water during a colonic as one would absorb from a glass or two of water.  The only time for concern is in the case of complete kidney failure or paralysis where colon hydrotherapy would be contraindicated anyway.

It is always recommended to supplement one's diet with a good mineral formula whether or not colonics are being taken.