Sometimes kidney stones and gout are not related to oxalic acid at all, but for people who are prone to those conditions, they can both be aggravated by too much oxalic acid according to the general medical literature I read on the subject. Apparently some people are bothered by it and some are not. It appears that purines (found in most meat products and all protein foods) and Uric Acid (which digests purines in the body) are mainly the culprits in gout and arthritis. That whole mechanism is defective when someone has gout.
