Calcium

"Calcium sources include yogurt, cheese, sardines, milk, orange juice, and turnip. The recommended intake for adults is 1,000 mg/day. Calcium is a component of mineralized bone and provides structure and microarchitecture. Deficiency increases the risk of osteoporosis, especially among postmenopausal women, people who are lactose intolerant, or vegans. Toxicity may cause kidney stones, and the upper limit is 2,500 mg."