Why is there osteoporosis? How is osteoporosis caused?

Osteoporosis (OP) was first proposed by Pommer in 1885. 1993 The 4th International Symposium on Osteoporosis defined osteoporosis as a systemic osteopathy characterized by decreased bone mass and degradation of bone microstructure, which leads to increased bone brittleness and even fracture. Its main feature is the reduction of bone mass, including the reduction of bone minerals and bone matrix in equal proportion; A series of bone microstructure degeneration phenomena such as bone resorption, trabecular thinning and even fracture; The brittleness of bones increases, the strength decreases, the bearing capacity of the original load decreases, and fractures are easy to occur under the action of small external forces.

Osteoporosis is a common disease in middle-aged and elderly people, which is more common in postmenopausal women and men after 55 years old. Women have an early onset, which is several times that of men. In addition to age, it is also closely related to the decline of sex hormone levels. In addition, lifestyle and mechanical activities also have great influence on bone mineral density. Physical activity has a great influence on bones. The more activity, the stronger the pulling force on the bone, which can promote the transformation of osteoclasts into osteoblasts, which is conducive to the formation of new bones. Due to various reasons, it has been idle for a long time, and due to insufficient mechanical stimulation to bones, it leads to less bone formation and more bone absorption, leading to osteoporosis. Long-term fixation of fractures and osteopathy can also lead to osteoporosis. Lack of outdoor activities and insufficient sunshine lead to insufficient vitamin D, which is also one of the reasons for osteoporosis.

Therefore, proper exercise is one of the important measures to prevent osteoporosis, especially weight-bearing aerobic exercise, which has the best effect on preventing osteoporosis It should be noted that you should not choose exercise with too high intensity, too fast and too strong. Excessive exercise load may easily lead to fractures, soft tissue injuries and cardiovascular diseases. Therefore, before choosing an exercise program, you should do a comprehensive physical examination, and it is best to choose the appropriate exercise program according to the doctor's opinions or suggestions and your own health status. We should follow the principle of step by step, planning and regularity, and establish good living habits. The intensity of exercise must vary from person to person. If you are in good health, the amount of exercise can be increased appropriately. Warm-up activities should be carried out before exercise and relaxed after exercise.