Osteoporosis has been ranked by the World Health Organization as the second most dangerous disease to human health after cardiovascular disease. Osteoporosis brings great inconvenience and pain to patients’ lives, and the treatment is very slow, once the fracture can be life-threatening, so we should prevent osteoporosis from the following four age groups. 1, 20 years old Our bones seem to be stationary, but in fact have been in the interaction of bone formation and bone resorption. From birth, bone formation is greater than bone resorption, bones become stronger and stronger day by day, the fastest rate of bone deposition before the age of 20, 20 years old basically reached more than 90% of the maximum bone volume, about 30 years old to reach the highest point of bone volume, to this bone accumulation stopped, called peak bone volume. Prevention of osteoporosis starts with the youth. Children must be taught not to be picky eaters, only a balanced diet structure, strengthen the bone nutrition, such as milk, calcium-containing foods, etc., is the basic guarantee of bone storage; on this basis, must strengthen the exercise, children naughty at all is not terrible, to let children run and jump up, so that the bones are strong, in order to achieve the ideal peak bone mass and bone quality, so that the loss of bone mass after middle age leads to bone The time of osteoporosis is delayed. 2, 30 years old Some women have loose teeth, back pain, heel pain and other “moon disease” after breastfeeding, and lack of calcium during breastfeeding is one of the reasons. During breastfeeding, the mother will feed her baby with calcium through her breast milk every day to meet her nutritional needs. If the mother’s calcium intake is insufficient at this time, she will use the calcium stored in her own bones to maintain the concentration of calcium in her breast milk, which in turn will lead to calcium deficiency in the mother and increase the risk of osteoporosis. Pregnant and breastfeeding mothers are advised to drink 500 ml of milk every day and eat more food such as egg yolk, fish, meat, beans, cauliflower and purple cabbage to enhance the absorption of calcium. If necessary, calcium supplements can be appropriately taken under the guidance of a doctor. In addition, during the period of calcium supplementation, we should get more sunshine, exercise properly outdoors and do postnatal health exercises to promote the recovery of bone density of the circumferential bones and increase bone hardness. 3, 50 – 60 years old Under normal circumstances, there are two kinds of osteoporosis, postmenopausal osteoporosis and senile osteoporosis. Postmenopausal osteoporosis usually appears after menopause in women around 50 years old, and senile osteoporosis appears after 62 years old for women and 72 years old for men. During the first 3-5 years of menopause, it is important to insist on long-term preventive calcium supplementation, with a daily intake of 1200-1500 mg. The best food source of calcium is milk. Next, kelp, dark green vegetables, beans, shrimp, sesame and almonds are also high in calcium. In addition to calcium, it should be noted that the basis of bone composition is the bone matrix, and the main components of the bone matrix, in fact, protein, amino acids and some minerals, if a long-term vegetarian diet, protein intake is not enough, also easy to osteoporosis. 4, after the age of 60 The most serious and common consequence of osteoporosis is fracture. The first way to prevent osteoporosis fractures in people with osteoporosis is to prevent falls, and then to maintain bone mass and strengthen bone strength. The most common fracture sites in the elderly are vertebrae, wrist bones and hip fractures. Once a fracture is sustained, a 10% loss of bone mass can occur within a month of bed rest, and muscle atrophy and decreased athletic ability can begin to occur, which is even worse for the elderly who already have little bone mass left. Exercise, diet and medication are the three main treatments against osteoporosis. Although osteoporosis cannot be completely prevented, giving certain preventive measures, such as adequate intake of calcium, vitamin D and exercise, can largely reduce osteoporosis and prevent serious complications from arising.