Provided is a soybean protein material suitable for patients with renal disease which is highly effective in delaying the progression of renal disease, and foods for patients with renal disease made from the soybean protein material. The invention was completed upon obtaining knowledge that, among the acid-precipitable soybean proteins, fractionated soybean proteins obtained by increasing the purity of soy bean acid precipitable proteins other than 7S-globulin and 11S-globulin, specifically, "non-7S and 11S-acid-precipitable proteins," have a strong effect in lowering albumin levels in urine.
