"The PDR of Herbal Medicines" cautions that you should avoid all forms of beetroot if you have a history of kidney disease because it contains high levels of oxaluric acid, which contributes to the formation of kidney stones. The University of Maryland Medical Center says that betaine may also interfere with cholesterol-reducing drugs.
Bodybuilders need to do everything that can help keep their kidneys not hurt them...Beetroot seems to be something that will stress the kidneys...All these pro bodybuilders are type II diabetics so their kidneys are already fukced. Adding beetroot will only get them closer to Derek Anthony's situation...