Review Article Role of exercise in osteoporosis prevention - Current concepts Mozaffer Rahim Hingorjo 1 , Sadiqa Syed 2 , Masood A.Qureshi 3 Department. of Physiology 1,2 , Fatima Jinnah Dental College, Karachi, Department of Physiology 3 , Dow International Medical College, Dow University of Health Sciences, Karachi. Abstract Osteoporosis is a metabolic disorder of the bones due to loss of both bone mineral and bone matrix in equal proportions resulting in a bone that is weak and unable to support the body. This becomes a problem in the elderly who are then at risk of frequent fractures increasing the morbidity and mortality. Measures taken early in life in the form of calcium and exercise go far in preventing the development of this disorder. The primary purpose of this narrative review is to evaluate the current literature and to provide insight into the role of exercise relating to osteoporosis. Emphasis is given to the importance of the specific types of exercises needed to increase bone strength and muscle power, keeping in view the age and general physical condition of the person. Introduction OSTEOPOROSIS is defined by the NIH Consensus Development Panel on Osteoporosis as "a skeletal disorder characterized by compromised bone strength predisposing a person to an increased risk of fracture." 1 The WHO Working Group has defined osteoporosis according to the measurement of bone mineral density (BMD) using dual- energy X-ray absorptiometry (DEXA). A T-score value of 2.5 standard deviation or more below the young adult mean is considered diagnostic for osteoporosis. 2 Bone mineral density at any time in life depends upon the peak bone density achieved during the development and growth period (especially at the time of puberty) and the subsequent adult bone loss. Regular 78 J Pak Med Assoc