Just recently, the world population surpassed the 8 billion mark, which is a remarkable sign of the expansion of human longevity and health. Forecasts indicate that this fast increase will slow down, but researchers have found a worrying aspect that, according to the authors of the study, may put our species in danger of going extinct.
Sperm counts among men with testes from South and Central America, Asia, and Africa had been sharply declining at previously unheard-of levels, according to a recent worldwide research. This expands on 2017 study that had already revealed comparable findings among citizens of North America, Europe, and Australia.
This is cause for concern because a reduced sperm count not only affects the patient’s ability to reproduce but also suggests a higher risk of chronic illness, a shorter lifespan, and testicular cancer. Sperm counts have decreased globally by more than 50% simply in the last 46 years.
Lead author of the research Hagai Levine warns that time is running out. We have a severe issue on our hands that, if not addressed, might endanger humankind’s existence, he says. “Our results act as a canary in a coal mine.”
The study, which uses data from 53 nations, demonstrates that total sperm counts (TSC) and sperm concentration (SC) have declined recently, falling by more than 1% year. The investigation actually revealed that the declining numbers have only become worse during the 2000s.
The scientists speculate that disruptions to the reproductive system during fetal life may result in lifetime reproductive dysfunction, even though the study was unable to definitively pinpoint what caused this catastrophic decrease. Additionally, unhealthy lifestyle decisions and risky ambient chemical concentrations may make the problem worse.
This clearly cannot continue unchecked, as co-author Shanna Swan explains: “The troubling declines in men’s sperm concentration are consistent with adverse trends in other men’s health outcomes, such as testicular cancer, hormonal disruption, and genital birth defects, as well as declines in female reproductive health.”