Although osteoporosis is most often diagnosed in postmenopausal women, it should be noted that signs of osteoporosis have been observed in younger women as well. Younger female athletes who are excessively lean can reduce or halt their estrogen production and establish the opportunity for bone loss. In addition, the positive effects of weight-bearing exercise are not apparent in excessively lean women. The positive effects of resistance training will not balance out the negative impact of reduced estrogen levels. Anorexia nervosa, which is most common in teenage and younger adult women, is characterized by abnormally low body weight. This state can also reduce estrogen production and invoke bone demineralization.
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