According to a new working paper from the National Bureau of Economic Research, warmer weather means less “coital frequency.” “Extreme heat leads to a sizable fall in births,” the study says.
“Temperature extremes could affect coital frequency. It could affect hormone levels and sex drives. Alternatively, high temperatures may adversely affect reproductive health or semen quality on the male side or ovulation on the female side,” say the three economists from Tulane University, University of California and University of Central Florida who wrote the paper.
In the paper, Maybe Next Month? Temperature Shocks, Climate Change and Dynamic Adjustments in Birth Rates, the researchers predict that “increased temperatures due to climate change may reduce population growth rates in the coming century.”
Looking at 80 years of U.S. fertility and temperature data, they found that “additional days above 80 degrees Fahrenheit cause a large decline in birth rates approximately eight to 10 months later.” And these would-be parents often do not “make up for lost time in subsequent, cooler months,” reports Bloomberg.
EcoWatch, 4 Nov 2015
thanks to Peter