Kidney beans are an excellent source of molybdenum. This chemical is needed in small quantities in the body to detoxify sulfites present in some foods. They are also a great source of folate, fiber, and copper, manganese, phosphorus, protein, vitamin B1, iron, potassium and magnesium.
The red color of kidney beans makes it rich in proanthocyanidins. This is the high antioxidant color present in deep colored foods like blueberries, Aronia berries, strawberries, pomegranates, grape skin and black rice. They impart antioxidant protection to the body, neutralizing the effects of carcinogens and free radicals and inhibiting the proliferation of the cancer cell.
Kidney beans are especially great at balancing blood sugar levels and are also high in L-arginine which increases nitrous oxide in the cells lining the vascular system. High nitrous oxide levels dilate the arteries, increasing blood flow and oxygenation to tissues.
They are great for blood sugar regulation and gut health, a rich source of iron and contain 15 grams of plant protein per cup. They are also a great source of complex carbohydrates.