A Reproductive Lexicon


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Osteoporosis is a loss of bone density that can result in increased risk of fractures and structural body deformities. It is defined as a bone mineral density greater than 2.5 standard deviations below the mean bone mineral density of young, healthy adults. Because estrogen is important in the maintenance and remodeling of bone, post-menopausal women naturally lose bone density with age and are at increased risk of osteoporosis.