I've been researching this lately after I heard the rumor going around. My friend has an uncle who's a bodybuilder, he has pure protein meals and has a protein shake 4x a day, he has way to much probably but he works out way too much as well. My friend's uncle gets a lot of kidney stones and claims that its from the protein he takes all the time. He has had a few operations to get rid of them so that he wouldn't have to urinate them out. The sites I use to read up on it, this one for instance http://kidney.niddk....s/stonesadults/, say nothing about protein specifically, but maybe its something in the protein that causes the crystals to build up.
I have two questions.
1. Is it possible that an extreme amount of protein could cause kidney stones? If so how much (in grams)?
2. Are there any foods or supplements that might be able to help deteriorate growing kidney stones?