Climate change may affect the birth rate. Why?

Due to climate change, it shortens the human pregnancy cycle and leads to an increase in the number of premature babies. Vomiting takes 40 weeks, and pregnancy can be a magical experience.

An alien little foot kicks your stomach and touches your stomach like a stranger. If sneezing is just peeing, you won't pay special attention. But in the hot summer, pregnancy is really not a very pleasant thing, even a very painful thing. In summer, the temperature rises with the climate change, and those pregnant women are suffering from wet and sticky pain.

No matter how we deal with the high temperature mentally, our bodies may have had enough. New research shows that global warming has led to an increase in the number of premature babies. A study shows that rising temperatures lead to about 25,000 premature births every year. Another study found that when the weekly average temperature rises by 0.3 degrees Celsius, spontaneous premature delivery will increase by 1 1.6%.

Term pregnancy is 39-40 weeks. If a baby is born before 37 weeks, it will be considered "premature" because some parts of the baby may not be mature. If babies come out of the oven after 37 weeks, they will be considered as "premature babies" before 39 weeks, that is, they may not be "crisp" outside and "cooked" in the middle, but they may still be fine.

These data are worrying, and researchers estimate that high temperature leads to an average premature birth of 6. 1 day. This period of time is usually a period when the baby forms neural pathways in the uterus and fine-tunes the development of organs such as lungs and liver. If climate change continues to lead to record high temperatures, the number of premature births and related complications will continue to increase.

In order to prove whether the weather is related to premature birth, the researchers chose Mississippi as the investigation object, investigated the birth records of 56 million newborns born between 1969 and 1988 in this area, and made statistics on the premature birth data of newborns whose birthday temperature exceeded 32℃. The results show that in the 20-year interval, an average of 25,000 babies in the United States die prematurely every year due to rising temperatures, and the total number of days of pregnancy in the United States is reduced by more than 6.5438+0.5 million days every year. In addition, when the temperature exceeds 32.2℃, the baby birth rate will increase by 5% that day, and the birth rate will still rise the next day. When the temperature drops to 32℃, the birth rate drops.