Monday, October 27, 2014

Climate change may reduce number of birth of children

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The number of male babies born around the world, is superior to the female, but a Japanese study shows that, with the most extreme fluctuations of temperature in the country since the ' 70, more male fetuses die in relation to female foetuses â€" resulting, of course, in the decrease in the birth of boys.

This means that the climate can help balance this proportion or even change it completely in favour of women, according to CBS News.

Published in the September issue of Fertility and Sterility, the study compared records of births and miscarriages the monthly temperatures between 1968 and 2012, stating that male fetuses were more likely to die during the extreme weather.

The phenomenon happened both in extremely hot as cold. After a summer with very high temperatures, in 2010, fewer babies the sixth male were born nine months later. And the same thing happened after a very cold winter, in 2011.

"The conception of male babies seem to be more vulnerable to stressors including climate changes," says the study. The causes are unclear, but this is not limited to humans. Sea turtles are more likely to produce female child in warmer temperatures. And chimpanzees have more male children during rainy seasons.

The study, led by Misao Fukuda, of the Institute of Health M&K in Ako, in Japan, you can't prove the influence of climate change, but it is known that other factors such as pollution and toxins affect the proportion of births.

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