Kidney bean has the functions of warming middle warmer, lowering qi, invigorating stomach, stopping adverse reactions, tonifying kidney and tonifying yuan. Kidney bean is a kind of food with high potassium, high magnesium and low sodium, which is especially suitable for patients with heart disease, arteriosclerosis and hyperlipidemia. The unique components in kidney bean, such as activating T lymphocytes and promoting DNA synthesis, have inhibitory effects on the development of tumor cells. Kidney beans also contain unique components such as saponins, urease and various globulins, which can improve immunity and strengthen disease resistance. Kidney beans should not be eaten raw, because eating kidney beans raw will produce toxins, leading to diarrhea, vomiting and other phenomena.

Kidney beans will produce gas in the process of digestion and absorption, causing abdominal distension, so patients with indigestion, chronic digestive tract diseases and abdominal distension should eat as little as possible.