It is indeed very interesting to read the url at the precceding post which shows the many benefits of H202 and explains that a little too much of antioxydants can be harmfull as it impede some vital oxydo-redox reactions in cell where free radicals are involved. There is also the fact that H202 is produced by many cells in the body (especiazlly neutrophilus cells and some cells lining the intestine. It is also produced in mucous menbrans by Lactofillus bacteria which is the base of probiotics products.
Nevertheless there are scientific evidence trough animals laboratories experiences that H202 is not promoting cancer (except if animal lack peroxydase enzyme which lack impede the same to transform the excess of H202 into water and oxygen). And the same experiences show an increase in the survival rate after two years of water 0.1% H202 given to mices (altough they where catalase deficient) See my post on toxicity of H202 to read the full study made for the FDA approval of thooth bleeching strips.

Further more if you take H202, we have found that a Liver Flush is a must as such product increase tremendouslmy the detoxifying activity of the body and mobilise the stones.