mrcem2-0552

A 72 year old male presents to the emergency department following a fall onto an outstretched hand. Following assessment you order an X-ray of the wrist which confirms a dorsally angulated extra-articular fracture of the right distal radius. You also observe cortical thinning and increased radiolucency of the bone and consider the possibility of underlying osteoporosis. What is a risk factor for osteoporosis?