irregular menstrual cycle for 40 year old woman who gradually loss weight

	Asked by Unregistered (Female; 40; none; Relevant drugs:no Rx only multi-vitamins ) on Sun 20, Jul 2008 09:42am :
	why would loosing weight causes irregular menstrual cycle? I did not loose weight dramatically. I have always weighed between 130 -140 but starting 2yrs ago, I began the NO Carb diet and I have maintained this diet with very little carb. I now reached my healthy weight of 118 - 120. I am 4'11 and I just turned 40 on 4/20/08. My normal menstrual cycle usually last a period of 3 - 4 days. this is the first time I have my menstrual cycle lasting little more than two weeks. My cycle started 7/7/08 and ended 7/14/08; stopped 7/7/14 and 7/15; restarted 7/16/08 to now but the bleed is not heavy.
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