If you use the formula I use to calculate how much protein you need to build muscle, you’ll probably be consuming about 20-25% of your daily calories from protein. Hardly enough to place undue stress on the kidneys.
To illustrate the point here’s a study that tested the hypothesis that a high-protein consumption would adversely affect the kidneys.
One group is put on a high-protein diet, the other on a low-protein vegetarian diet. The conclusion – speaking of the higher-protein diet it says:
“such a diet does not significantly affect kidney function with “normal aging” in healthy subjects.”
Enjoy your salmon everyone