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Non-removable navel jewelry can increase the measured bone density of the underlying vertebra. We measured lumbar spine bone mineral density (BMD) by dual-energy X-ray absorptiometry (DXA) in an observational study of 727 adolescents and young women aged 14–30yr. We evaluated several methods of correcting BMD: manually erasing a small area, eliminating 1 or 2 vertebrae, estimating the BMD from 1 or...
Although adolescent women are actively acquiring bone, there has been little study of the possible effects of depot medroxyprogesterone acetate (DMPA) injectable contraception use on bone density in adolescents. We conducted a cross-sectional evaluation of the association between DMPA use and bone mineral density in adolescent women, ages 14-18 years. Of 174 study participants, 81 were DMPA users...
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