You may have heard erroneous reports how ‘too much protein will put unnecessary metabolic strain on your kidneys’, but the truth is this…THESE CLAIMS ARE UNFOUNDED. In other words, there is no substantive evidence to suggest that a protein intake in excess of 1.4-2.0g protein per kg body weight will cause strain on the kidneys. Yes, people consume in excess of this, but this should be done methodically and under expert supervision (if at all), as always it is at the consumers discretion.
With anything it is moderation, due care and attention, and staying abreast of current information that counts. With regards to whether protein (in the above mentioned quantities) puts strain on your kidneys…the answer is a resounding NO!
Campbell, B., Kreider, R, B., Ziegenfuss, T., Bounty, P, L., Roberts, M., et al. (2007). International Society of Sports Nutrition position stand: protein and exercise. Journal of the International Society of Sports Nutrition. 4: 8.