You should reduce the number of animal products in the diet. Protein products increase the level of uric and phosphoric acid in the human body. Experts recommend that middle-aged people significantly reduce the consumption of meat products, replacing them with dishes from vegetable protein. These things will increase the number of unfavorable elements for the kidney in the body. It may lead to different kidney issues and if the issue continues for a long time, it may lead to kidney failure and kidney stones. Do you have any idea what do kidney stones look like?