These newer compounds have been studied to varying degrees in laboratory test tubes (in vitro), mainly in animal feeding studies. (probiotics-help.com)
Short - term feeding studies completely miss this effect. (idmprogram.com)
Since the idea that protein is bad for your kidneys, liver, bones, etc. they also conducted a basic metabolic panel to track changes over the high protein feeding study. (sciencedrivennutrition.com)