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Thursday, January 04, 2018

HOW LIGHT AND DARK AFFECT OVULATION AND FERTILE DAYS

Ovulation Light and Dark

I have done numerous posts on how light (and dark) affect fertility. Here is another article which addresses the affects of light on both women and men and cites a study where women actually slept next to a light bulb for part of their cycle to get it regulated.
See also: www.getpregnantover40.com for more on ovulation and fertility 
 I don't want to compare women with chickens, but I have heard that farmers that raise chickens put them on an artificial light/dark cycle to get them to lay eggs on schedule.  It's possible that humans may function the same way!

From the article:
To keep functioning as it should, the master clock needs to re-sync itself all the time using a very simple signal: a period of bright light followed by a period of darkness, i.e., day and night. That light-dark signal reaches the master clock in the brain via the ocular nerve, which relays the signal to the brain’s pineal gland. A century ago, before the widespread use of artificial lights, the pineal gland
http://getpregnantover40.com/fertility-bracelet.htm
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(which produces the hormone melatonin) had no problem obtaining the feedback it so desperately seeks. Today it’s not that easy. But once you understand how your body responds to light, you can take steps to make sure that you get the light you need to keep your reproductive system functioning like clockwork.

Light and the Menstrual Cycle
The study of circadian (24-hour) rhythms is still a relatively new science, so it’s not surprising that the research demonstrating a link between light and fertility is still fairly new as well. What makes it so exciting is that it’s a multidisciplinary effort, with contributions coming from experts in gynecology, physics, biology, nursing, astrophysics, psychiatry, and andrology, among others.

Women’s menstrual cycles follow an approximately 28-day pattern based on the 29-day cycle of the moon. The moon’s light ebbs and flows over the course of the 29 days, with the days surrounding a full moon being the brightest. Back in the 1960s and 1970s, researchers started to focus on using light exposure that mimicked moonlight as a means of regulating the menstrual cycle.

Then in 1990, Psychiatry Research published a study (“Night Light Alters Menstrual Cycles”) reporting that women with long and irregular menstrual cycles who slept with a 100-watt bulb beside them from days 13 to 17 of their cycles succeeded in regulating and shortening those cycles from a mean of 45.7 days to 33.1 days.
from: conceiveonline.com

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