| Vitamin D may contribute to widespread effects in human health, and vitamin D deficiency may lead to the development of osteoporosis and to falls and fractures; meanwhile, there have been some conflicting guidelines and inconsistent practices about vitamin D in the West. Given these conditions, some specialists from Osteoporosis Committee of China Gerontological Society develop this practical application guideline for vitamin D and bone health in adult Chinese. This guideline includes "Starter Edition" and "Standard Edition", and the evidence of this guideline mainly comes from the guideline of National Osteoporosis Society in the UK (2013), the report of Institute of Medicine in the United States (2011), supported by some domestic literatures. This guideline addressed the management of vitamin D deficiency in adult patients with, or at risk of developing, bone disease. It should be noted that the management of vitamin D deficiency in childhood, in pregnancy or in patients with severe or end-stage chronic kidney disease (CKD Stages 4–5) is beyond the topic of this guideline. The contents of this guideline includes the setting up of vitamin D thresholds for adult Chinese, assessment of vitamin D status, interpretation of 25OHD measurement, detailed treatment plan and prevention strategy for vitamin D deficiency. |