2023-11-15 16:27:11
SAMEER AL-DOUMY / AFP A link between exposure to insecticides and a lower sperm concentration in adult men has been demonstrated by a scientific study.
SAMEER AL-DOUMY / AFP
A link between exposure to insecticides and lower sperm concentration in adult men has been demonstrated by a scientific study.
HEALTH – If the drop in sperm count has been observed and studied closely in recent years, a study unveiled this Wednesday, November 15 seems to have pinpointed the or one of the reasons for this drop in sperm concentration in men. adult man.
The team behind this discovery, led by researchers Melissa J. Perry and Lauren Ellis, suggests that there is a clear association between exposure to insecticides and a lower concentration of sperm, regardless of where we live on Earth. .
« Insecticides are a concern for public health and for all humans, who are exposed to them mainly through the consumption of contaminated food and water. “, explains Lauren Ellis, doctoral student at Northeastern University in London. A study on the subject therefore proved essential, given the omnipresence of pesticides. in the environment and documented risks for reproduction ».
To do this, the team looked at 25 studies spanning five decades of “ research on male fertility, reproductive health ” and of ” human evidence regarding the health impacts of exposure to two widely used classes of insecticides ». Namely, organophosphate pesticides and methyl carbamates.
Reduce exposure to insecticides
And their conclusions are chilling since a link “strong, robust and constant” between exposure to insecticides and a lower concentration of spermatozoa was detected by comparing all these studies, when adult men are confronted with these substances.
For Melissa Perry, professor at George Mason University in Virginia and lead author of the study published in the scientific journal Environmental Health Perspectives« available evidence has reached a point where we need to take regulatory action to reduce exposure to insecticides ».
However, it still remains difficult to explain the mechanisms that harm sperm concentration. The study, however, recalls that insecticides “ directly interfere with hormones (…) and/or damage testicular cells ».
The researcher, however, assures that the results of her study are “ very solid ”, because the use of the meta-analysis method “ ensures that we take into account any potential weaknesses in the set of studies we reviewed ».
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