Obesity is a growing problem for many women especially postmenopausal women. Despite the long list of complications of obesity, postmenopausal women may find some advantages in obesity, regarding osteoporosis. In our work we study the relation between obesity and osteoporosis in Egyptian females. This study included 30 Egyptian obese postmenopausal females. They were compared to 20 postmenopausal non obese female patients as a control group of the same age and similar socioeconomic conditions.They were all subjected to clinical examination, radiological a examination (DEXA), skin folds measurements and body mass index.The results of all of the above conclude that obesity may protect sport menopausal females from the risk of incidence of osteoporosis.