What happens to bone
Oestrogen restrains the cells that break down bone. When it falls, resorption outpaces formation and bone density declines fastest in the years immediately surrounding the last period. That loss is silent. There is no symptom until a fracture occurs, often at the wrist, spine or hip, and vertebral fractures can happen without any recognised injury, presenting instead as height loss or back pain.
Indian data on vitamin D deficiency and dietary calcium intake are relevant here, as both are frequently inadequate. Add low body weight, smoking, a family history of hip fracture, long-term steroid use, thyroid disease, or menopause before 45, and the risk profile changes considerably. Identifying that profile early is the point of the assessment.
