Mandwa Rajma is known for its high folate, protein and mineral content. Consumption of beans gives you a healthy heart. The folate content in beans helps to lower the homocysteine levels in the body. Homocysteine is basically an amino acid that is related to risks of developing heart problems. Moreover, the high levels of magnesium found in the kidney beans provide added cardiovascular health benefits. Magnesium is an important mineral that helps to avoid hardening of arteries and hence improves the blood, oxygen and nutrients flow in the body.