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seasonal amenorrheaFrom: nalbf@ime.netWed Apr 30 20:06:09 1997
Up here in the frozen north where the days are short in the winter I have seen two young women women who develop amenorrhea from around November until April. Neither exercise strenuously or are long distance runners (snow shoers maybe). Speroff mentions a study from the 80's from Scandanavia showing that female runners are more likely to become amenorrheic in the winter months and another study showing that fertility rates are lower in Scandanavia during the winter. He suggests that increased melatonin secretion in the dark months may lead to amenorrhea. I did a Medline search for more recent articles but didn't find any. Anyone else seen this? How about you Mats? Jay Naliboff, MD Farmington, Maine
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