Older people can and should take calcium supplements, mainly because the majority of older people are in a calcium deficient state, and more serious cases will also produce osteoporosis. As the elderly age, the amount of exercise will gradually decline, so the loss of muscle and bone mass will gradually increase, leading to the formation of osteoporosis. In addition, the hormone secretion of the elderly also gradually decreases, so the rate of calcium loss will also increase. Based on the above points, the elderly should be treated with calcium supplements appropriately. Not only should they take calcium supplements, but they should also exercise more, get more sunlight and strengthen the intake of vitamin D3 so that the calcium they take can be retained.