Obesity and osteoporosis

Osteoporosis and obesity, two disorders of body composition, are growing in prevalence. Interestingly, these diseases share several features including a genetic predisposition and a common progenitor cell. With aging, the composition of bone marrow shifts to favor the presence of adipocytes, osteoclast activity increases, and osteoblast function declines, resulting in osteoporosis. Secondary causes of osteoporosis, including diabetes mellitus, glucocorticoids, immobility and metabolic syndrome are associated with bone-marrow adiposity. Unraveling the interface between bone and fat at a molecular and cellular level is likely to lead to a better understanding of several diseases, and to the development of drugs for both osteoporosis and obesity