الفهرس 
Introduction
Bone MetabolismOnly 14 pages are availabe for public view
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Abstract
Loss of bone mass with age, is universal phenomenon and is pronounced in women than in men. The clinical condition, here the bone loss has proceeded to the extent that fractures occur llowing even a minimal trauma is termed osteoporosis. Factors influencing bone formation and resorption have been xtensively studied. Other than age and gender, factors affecting bone ass include race, diet, smoking and physical excercise. The studies on relationship between reproductive behaviour and bone density ave not been consistent in their findings ( Stevenson et al, 1989). Since the absolute value of peak bone mass affects the future risk of fracture in an individual, it is important to know what factors affect peak bone mass in premenopausal women. Given the causal association between estrogen deficiency and rate of bone loss, a between steroid contraception and bone density can not be ruled out. Available data on the effect of steroid hormone contraceptive use on bone density/mass are limited to combined oral.contraceptives, except one report related to use of depot medroxy progesterone acetate. The published reports on the subject are not conclusive on whether oral contraceptive use has a protective effect on bone density and bone metabolism or not (Mehta, 1993 ).