Between 1990 and 2000, our teen pregnancy rate dropped from 117 to 84 per 1000 women aged 15 -19. Both the Left and Wrong want to claim responsibility, but Liza Mundy has an interesting twist: low sperm counts among teenagers. (Obligatory old fart caveat: guys, this does NOT mean you can toss the rubbers.) Mundy writes:
The great sperm-count debate began in 1992, when a group of Danish scientist published a study suggesting that sperm counts declined globally by about 1 percent a year between 1938 and 1990. This study postulated that environmental influences, particularly widely used chemical compounds with an impact like that of the female hormone estrogen, might be contributing to a drop in fertility among males. If true, this was obviously an alarming development, particularly given that human sperm counts are already strikingly low compared to almost any other species.
I remember in the late ’80s early ’90s when environmentalists were talking about how organochlorines, the core of many pesticides, were causing die-off among amphibians because the males had undeveloped or even missing testicles. The implication was that since amphibians reproduced at a much fast rate than humans, this was a harbringer of things to come.
We thought that because it was males being effected, that finally the World might sit up and take notice. I don’t thing we expected it to happen this quickly. But a late ’90s study indicates this is just the case.
…American reproductive epidemiologist named Shanna Swan published work confirming the Danish findings. In a well-respected study published in Environmental Health Perspectives, Swan, now at the University of Rochester Medical Center, found that sperm counts are dropping by about 1.5 percent a year in the United States and 3 percent in Europe and Australia, though they do not appear to be falling in the less-developed world.
This may not sound like a lot, but cumulatively-like compound interest-a drop of 1 percent has a big effect. Swan showed, further, that in the United States there appears to be a regional variation in sperm counts: They tend to be lower in rural sectors and higher in cities, suggesting the possible impact of chemicals (such as pesticides) particular to one locality.
So, do you have a nice, dandilion-free lawn?
My Soundtrack: Spanish Teeth by Robbers On High Street on WOXY.