Researcher Russell J. Reiter says: "Melatonin is a hormone secreted by the pineal gland of the brain in response to the darkness. It is extremely important for conception, as it protects the ovaries from oxidative stress. The importance of melatonin increases during ovulation. Each time, when the night turns on the light, melatonin levels are falling.

If the woman is trying to conceive a child, then it would need at least eight hours a day to spend in the dark, transmits Live Science. Changing cycles of light and darkness must be regular, not to disrupt the biological clock. Such conditions need to be observed and during pregnancy, especially in the last trimester.

the Brain fruit should also receive the necessary amount of melatonin for regulation of their biological clocks. Studies conducted on animals showed that violations of the light / dark cycle increase the risk of attention deficit disorder and hyperactivity disorder or autism spectrum disorders.

To production of melatonin important not sleep and it was dark. The researchers recommend that women who are already pregnant and those who are trying to conceive a child, make sure that the bedroom is dark enough and there misses the light from the street. Also, avoid the light coming from the TV screen and backlight of different gadgets.

In an extreme case, night lighting shall be red or yellow, not white or blue. Those who cannot sleep, it is important not to turn on the light at night time.