LOL, what kind of test did they use to find that information? there is no way of knowing that it shortens life span"
however if it dammages the kidney, then you can say it "dammages the kidneys"
was that a medical doctor you found this information from? if so then that is the reason. lol
if doctors are stupid then nurses must be like 10 times stupider because they just do what ever the doctor tells them to do, and they have a "licence" to do that.
i wouldnt take h2o2 for the rest of my days. i think its good for cleaning and getting rid of some toxins for the short term.