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If Menstrual Cycle Stops, Athletic Girls More Likely to Have Impaired Bone Structure
The results will be presented Sunday at The Endocrine Society''s 93rd Annual Meeting in Boston.
"Given the high number of young women and girls involved in athletic activities and the fact that up to 24% of young female athletes may lose their periods, this finding represents a significant public health concern," said Madhusmita Misra, MD, the study''s principal investigator.
Misra, a pediatric endocrinologist at Massachusetts General Hospital in Boston, said amenorrhea, or absence of menstruation, can result from intense physical activity, either alone or combined with inadequate intake of calories. In a previous study, Misra found that athletes who lose their periods have low bone density, a risk factor for fracture and premature osteoporosis. Because abnormal bone structure (microarchitecture) is a known independent risk factor for fractures among older women, she assessed it in the current study.
Misra and her colleagues studied 34 endurance athletes, ages 15 to 21, all of whom were involved in running or other weight-bearing activities. Sixteen athletes had no periods, and 18 had normal menstruation. The investigators studied the athletes'' bone density and bone microarchitecture, and compared these measures with those from 16 nonathletic controls. To assess bone structure, they used a form of CT scanning called high-resolution peripheral quantitative computed tomography.
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More News on: Infantile Cortical Hyperostosis, Dysmenorrhea, Premenstrual Syndrome, Vaginal Bleeding, Painful Menstrual Periods
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