I have been discussing at the blog over some years now the problem that humanity is going to face in the future from the rapid decline in the quality and quantity of human sperm, with some scientists seeing this factor alone as producing a population crash, as argued by Shanna Swan and Stacy Colino, in Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race (2021). The focus has been upon hormone-altering chemicals, found all around the modern world, as in plastics and numerus chemicals.
Among these chemicals are insecticides, which recent research has shown decreases the concentration of human sperm. The research examined the existing literature on the topic and concluded, as one author put it; “Based on this meta analysis, we believe insecticide exposure … is impacting overall sperm concentration.” “The message is we need to reduce insecticide exposure in order to ensure men who are planning a family or want to conceive children are able to do that without interference.”
