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Whole Wheat Bread: High in Phosphorus

While healthy for most, whole wheat bread and other whole grain products are high in phosphorus, a mineral that damaged kidneys cannot remove from the blood. High phosphorus levels can cause brittle bones and itching. A study in the American Journal of Kidney Diseases found that phosphorus from plant sources is less absorbed than from animal sources, but it still adds to the overall load. Choose white bread or refined grains in moderation.