Today the effects of climate change are increasingly evident, and difficult to ignore. We are probably talking about the biggest obstacle that we as humanity must fight.
And although the consequences of our actions are evident, such as the increase in temperature, pollution in the world’s capitals or the rise in the seas, did you know that climate change can also have an impact on human fertility?
In both plants and animals, gametogenesis, the event by which germinal cells are converted into gametes, specifically sperm and oocytes, is a process that is particularly sensitive to the stress caused by temperature variations.
It is known that, in male gametogenesis, the increase in temperature affects this critical process, resulting in observable changes in spermatozoa such as
Reduced sperm cell numbers
Abnormal sperm morphology
Clearly decreased mobility
These are valuable parameters that help determine the fertilizing capacity of the sperm, not only of humans, but of many different species.
All over the world a rise in temperature has been registered, even reaching 54º C in some latitudes of the Middle East. In Mexico alone, April and May 2019 were recorded as the hottest months in the last four years.
Let us remember that the testicles are outside the body to keep a slightly lower temperature, and thus optimize sperm production, as well as their vitality.
Specifically, for men, the optimum body temperature is around 37º C, while the testicles are at 35º C or 36º C. Now imagine with us, what would happen under a radiant day, with the sun at its highest point and an uncontrollable heat never before recorded.
Not only is our planet and its vast biodiversity being hit by climate change, but male fertility as well.
And this is dangerous for our generation and generations to come.
Get closer to the experts in Fertility, CITMER We want to be part of your history.
Iossa, G., Maury, C., Fleycher, R.M., & Eady, P. E. (2019). Temperature-induced developmental plasticity in Plodia interpunctella : Reprocuvtive behavior and sperm length. Journal of Evolution and Biology. doi: 10.1111/jev.13447.
López, J. (2019, May 12). 2019, the hottest year in the last four years. Excelsior.