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 Drinking ice and menstruation  

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I wonder whats the physiologic basis between drinkin cold water and the apparent diminution of menstrual bleeding in some women. One of my friends asked me this and she witnessed that herself, although it may sound like a myth. I therefore think probably its because of sympathetic nerve activation due to the cold stimulation? But as far as I know the uterus contain both a1 and b2 adrenergic receptor. A1 stimulation lead to constriction while b2 cause dilation. So my question:
What type adrenergic recptor does uterus contain, and what tyoe of AR does its vessel contain?
Does cold stimulation lead to activation of both receptors?
How can I put all these tpgether to answer that question above?


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