Osteoporosis (OP) is a common systemic bone disease which has become a serious public health problem in China. In clinical practice, we found that some primary osteoporosis may be due to parathyroid hyperfunction (subclinical hyperparathyroidism) or hyperparathyroidism which is the result of negative calcium balance and hypocalcemia caused by insufficient calcium intake and/or vitamin D deficiency/insufficiency, which is preventable and controllable. Therefore, we call this kind of osteoporosis parathyroid hyperfunction or hyperparathyroidism associated osteoporosis. The daily calcium intake of Chinese people is generally insufficient, and vitamin D deficiency/insufficiency is also a worldwide public health problem. Parathyroid hyperfunction or hyperparathyroidism associated osteopenia and osteoporosis which are results of hypocalcemia and negative calcium balance caused by long-term insufficient calcium intake and/or vitamin D deficiency/insufficiency exist extensively in clinical practice. Its prevention and treatment can effectively prevent and treat osteopenia and osteoporosis, so as to effectively prevent and treat diseases such as short stature, rachiokyphosis, backache, fatigue, bone pain, fracture, metastatic vascular calcification and systemic calcinosis, improve people’s health and help achieve the goal of "Healthy China 2030" .

Humans ; Female ; Prevalence ; Breast Neoplasms ; Cancer Survivors ; Non-alcoholic Fatty Liver Disease ; Liver