If a patient has severe renal insufficiency, hyperkalemia and proteinuria, the patient cannot eat amaranth because it is rich in potassium and vegetable protein, which can aggravate or induce hyperkalemia, and the protein of amaranth is vegetable protein, most of which are non-essential amino acids. It can increase the burden on the kidneys and aggravate azotemia, so patients with severe renal insufficiency should not consume amaranth. If the kidney insufficiency is mild, there is no hyperkalemia, and there is no large amount of proteinuria, you can eat a small amount of amaranth, but not a large amount for a long time, and you should pay attention to monitoring the change of blood potassium.