Whether supplementing high protein after fitness will bring pressure to the kidneys cannot be generalized. If the kidney is already sick, then a high-protein diet will inevitably lead to an increase in the burden on the kidney.

Nephropathy patients have fewer glomeruli. When too much protein is filtered beyond the workload of glomerulus, protein will damage glomerulus of nephritis patients, and further decrease of glomerulus will lead to aggravation of nephropathy and enter a vicious circle.

Therefore, patients with kidney disease, especially those whose glomeruli have been reduced to a certain number, should limit the intake of protein.

However, if people generally do not have kidney disease, even if one kidney is missing, a high-protein diet will not cause an excessive burden on the kidney. "High" does not mean "super", and the increase in the workload of the kidney does not necessarily mean that it is beyond the tolerance range.

Therefore, supplementing protein properly after fitness will not cause too much burden to the kidneys, but the amount of protein should be controlled within a certain range. Because in addition to protein, supplements such as sugar, dietary fiber and fat are still necessary. Don't blindly pursue high protein and ignore the intake of other nutrients.