Climate change also affects gender disparities

A recent study by Japanese scientists has shown that climate change also significantly affects the sex ratio at birth. Not only that, the male fetus is also vulnerable to this climate change situation.

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Experts said that since the 1970s in Japan, rising temperatures have also somewhat affected the increase in male fetal mortality compared to female fetuses.

Not only that, during this period, the rate of male and female infants in the whole country decreased, which means that the birth rate of boys is decreasing more than the number of girls born.

Dr. Misao Fukuda of the Institute of Health and M&K in Ako, Japan, said that we looked at monthly temperature data during the period from 1968 to 2012 and studied archives on the situation of newborns. born during that time.

In recent years, there have been 90,000 babies and about 1,000 fetal deaths recorded every month in Japan.

Researchers also consider fetal death due to other causes such as abortion or miscarriage after 12 weeks of pregnancy.

Experts also reviewed two extreme weather events in Japan - very hot summers in 2010 and extremely cold winters in 2011.

In the hot summer, the highest temperature rise in September 2010 resulted in an increase in the number of male fetuses and 9 months later, the proportion of boys and girls born was quite different. great. A similar phenomenon occurs in the cold winter - January 2011.

Many previous studies show that other factors such as environmental pollution, toxic waste into the environment can also affect the sex ratio.

But now, experts claim that the specific month's temperature also affects the sex ratio of girls, the boy was born 9 months later.

This proves that temperature fluctuations also play a significant role in the decline in birth rates in this Sunrise country.

Dr. Misao Fukuda and his colleagues said: "This is really a big concern in countries with a disparity in the sex ratio of the fetus. Not only that, but the temperature changes also affect the ratio sex - a prerequisite for creating a child ".

Researchers are currently looking for a solution to why male fetuses are unable to cope with the extreme temperatures of the weather.

Some hypotheses are suggested that male embryos are susceptible to factors such as stress, earthquakes, toxic environments .

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