[Aunt Polgara]

Diabetics need to be very wary of high protein diets because protein is very hard on your kidneys, and diabetics already tend to have kidney problems. My brother-in-law (who has had type I diabetes for over 40 years) went on a high protein diet and destroyed his kidneys. He's on dialysis now. :-(

[Rammer]

because protein is very hard on your kidneys

In individuals with healthy kidneys, there is no research or evidence to support this old myth.

Only kidneys that are already diseased have difficulty with high protein diets.

[cherry]

I suspect that your brother had bad kidneys due to the diabetes already, but the high protein diet sent him over the edge...diabetes is sneeky that way....