Calcium deficiency in adults can lead to a reduction in bone density, osteoporosis and even the risk of fracture. Calcium deficiency in adults must be treated with calcium supplementation, which is done in two parts: dietary supplementation and pharmaceutical supplementation. 1. food supplementation, you can drink more milk, which is rich in calcium and has a better effect on the body’s calcium supplementation and is also easier to absorb. 2. pharmaceutical supplementation, you can take calcium medication orally, in addition to drugs containing active vitamin D, together with oral supplementation The best effect of calcium, because the active vitamin D can promote the absorption of calcium. Encourage patients to increase outdoor activities, because more sunlight can also promote the synthesis of active vitamin D, for promoting the absorption of calcium is also a better role.