The link is associated with diabetes. Interestingly, we were warned of this well over a hundred years ago. "The effects of a flesh diet may not be immediately realized, but this is no evidence that it is not harmful. Few can be made to believe that it is the meat they have eaten which has poisoned their blood and caused their suffering. Many die of diseases wholly due to meat eating, while the real cause is not suspected by themselves or by others" {CG 382.4}.