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quote:Originally posted by cannabinoid I don't think there's anything in the digestive tract capable of homolysis of carbon double bonds, otherwise almost everything you eat would form lots of free radicals.
quote:Originally posted by cannabinoidFrom an evolutionary standpoint, why did we evolve a metabolism mechansim that can damage our DNA? Modern metabolisms all originate with glucolysis, which is supposedly VERY ancient. It's just the very end of the proton transport chain (where oxygen uptakes a proton to form water) where oxygen is needed. Is it the reaction of oxygen with OTHER things in the cell that causes the problem or is it a "misfiring" of the proton gradient that causes an incomplete reaction of protons and oxygen leading to free radicals? Inquiring minds want to know!...
quote:Originally posted by cannabinoidBut there are other long-lived animals though, many of which have been around for millions of years. I've never heard of whale or turtle cancer. Of course, whales and turtles don't smoke or inhale asbestos.This message brought to you by The Council of People Who Are Sick of Seeing More People