May the least favorable for conception

July 10, 2013

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The most unfavorable month for conceiving a child has been recognized by scientists May . It turns out that the children who were conceived by parents in May, the highest risk to be born prematurely. This will have an effect on human health throughout its life.

Such findings reported by researchers Princeton University That evaluated the results of extensive research aimed at evaluating the correlation between the seasonal fluctuations in children's health at birth and the period of conception.

This problem scientists have studied for many decades. Thus, in the thirties of the twentieth century, doctors said that the children who were born in the winter are less good health compared to infants who were born at other times of the year. Winter children develop slowly both physically and mentally. In addition, the study showed that people born in the winter, have a shorter life period. As a rule, this was due to severe weather conditions, a deficit vitamin D As well as the prevalence of infection in the cold season.

In recent studies, the authors were able to analyze the data of about one and a half million Americans who were born between 1994   and 2006 years . The researchers examined data siblings to avoid the influence of socioeconomic differences nurturing environment.

It turned out that the most unsuitable to the period from the point of view of the health of the baby is the time from January to May. It is the last month of spring was named the most unfavorable for conception. The study showed that children who were conceived in May on 13%   often born prematurely. At the same time the most favorable time to conceive a child is during the summer months. Children who were conceived at the time, rarely born prematurely. Besides their birth weight higher than the average of about 8 grams .

Scientists say that this phenomenon is due to the fact that in the last months of pregnancy women whose children were conceived in May, the peak of the epidemic Flu . It noted a strong influence on the duration of influenza childbearing, why pregnant women are advised to take care in advance of vaccination against this disease.

By the way, the other day there were the results of another study that confirms the hazards of smoking while carrying the baby. The researchers analyzed the sperm quality of men and concluded that smoking pregnant women significantly increases the risk of infertility   in the future of her son. The number of sperm in men is reduced not only if he smokes or uses drugs himself, but in the event that during pregnancy his mother smoked. The fact that smoking women the fetus develops more slowly. Consequently, the sperm produced less intense.

The researchers analyzed data 2900 pregnant women   and children born to them. Also, the study was conducted, when young people were executed 20-22 years . It turned out that every sixth man, whose mother was smoking, had lower sperm quality than is necessary in normal. And about a quarter of the men had abnormal sperm shape.