Night-lighting and the menstrual cycle
I'm reading a very interesting article right now about how certain factors affect fertility. One such factor is diet, which seems rather obvious (to me at least) that it would effect fertility, but another one is night-lighting.
"You can see how melatonin production-and thereby sleeping in darkness or with light-can affect the whole body's functioning, including the menstrual cycle: if the hypothalamus doesn't receive sufficient melatonin, its ability to regulate the hormonal system will be impaired...
"John Rock (the Ob/Gyn whose experiments with giving infertile women synthesized progesterone led to the creation of the Pill) and physicist E.M. Dewan found that women's menstrual cycles became regular by sleeping in complete darkness Days 1-13, sleeping with a 100-watt bulb burning all night (under a lampshade in their bedroom) Days 14-17, and then returning to sleeping in complete dark."
"You can see how melatonin production-and thereby sleeping in darkness or with light-can affect the whole body's functioning, including the menstrual cycle: if the hypothalamus doesn't receive sufficient melatonin, its ability to regulate the hormonal system will be impaired...
"John Rock (the Ob/Gyn whose experiments with giving infertile women synthesized progesterone led to the creation of the Pill) and physicist E.M. Dewan found that women's menstrual cycles became regular by sleeping in complete darkness Days 1-13, sleeping with a 100-watt bulb burning all night (under a lampshade in their bedroom) Days 14-17, and then returning to sleeping in complete dark."