In this video I discuss why does the body need calcium, how much calcium does the body need, and what does calcium do in the body. Transcript Calcium is a macro mineral and is the most abundant mineral in the human body. Its functions include the mineralization of bones and teeth, it also helps in nerve functioning, and assists in the contraction and relaxation of muscles. It also help in regulating blood pressure, blood clotting, and overall immune system health. Food sources of calcium include cow’s milk products, small fish with bones such as salmon, green leafy vegetables, and legumes. since most people do not consume enough calcium consumption can be a concern. Calcium consumption is a concern since most people do not consume enough. Calcium deficiency can cause reduced bones mass and strength in children and it can lead to ostemalacia, osteopenia, and osteoporosis in adults. The recommended daily intake for calcium for men and women is 1000 mg per day. Toxicity can occur as low as 2.5 g per day depending on the individual. Side effects at high doses include nausea, vomiting, kidney damage, and irregular heart rhythm.