Calcium is one of the most abundant inorganic elements in the human body. When the body is deficient in calcium, back pain, leg cramps, osteoporosis and even fractures can occur, but can calcium supplementation alone eliminate the above symptoms? The expert’s answer is no. Because after middle age, the body’s function shows a trend of decline, the body’s hormone level is reduced, intestinal digestion and absorption capacity is reduced, the emergence of various diseases have led to the body’s absorption of calcium, which is the reason why middle-aged and elderly people are prone to osteoporosis, so strengthen the absorption of calcium is the fundamental. Calcium supplements need to be supplemented with active vitamin D. When calcium enters the body, it needs the help of active vitamin D in order to be absorbed, and the active vitamin D synthesis in the elderly declines, so even if calcium supplements are supplemented, they cannot be absorbed well. Experts remind: Calcium supplementation for the elderly cannot increase calcium absorption, let alone reduce the incidence of fractures, so special attention should be paid to supplementing active vitamin D preparations to enhance the absorption of calcium.