Does amino acids and whey protein causes problems in kidneys?

Here are some ...: All available studies have revealed no conclusive evidence to cause kidney damage although possible increased risk of renal stone and possible stress onto the already sick kidneys. Generally speaking, their use for ordinary healthy kidneys should be okay and poses no known risk to the kidneys. More? To http://www.livestrong.com/article/261806-whey-protein-kidney-damage/. Best wishes ...