A biggest-of-its-kind study suggests that sperm counts are falling. By a lot. Researchers studied French men from 1989 to 2005, measuring their sperm counts regularly, and found that counts fell about one third in that 16-year period, from 74 million per milliliter to about 50 million. A steady yearly decrease of about 2 percent took it that low.
For the study, out today in the journal Human Reproduction, researchers used a database of 126 fertility clinics in France, then took that data and narrowed it down to 26,600 samples from men unlikely to have existing infertility problems. Along with a major dip in sperm count, the study also found an increase in the amount of misshapen sperm (i.e. bad swimmers) in the men, who were 35 years old on average.
That's a big dip, obviously, but it still falls in the normal sperm-count range--the World Health Organization puts that number at anything more than 15 million per milliliter. That doesn't sound so bad, but the researchers argue that the 2-percent-decrease is cause enough for concern, and point out that any decrease can hurt men's chances of conceiving children.
A caveat: Studies on sperm counts have long been mired in controversy, as The Guardian writes, and the French study isn't necessarily different just because it's so expansive. The researchers may have sidestepped some issues but still run into others, like not accounting for the men's socioeconomic status in the study, or not fully considering that doctors are getting better at measuring sperm count. As one scientist told the paper, "Sperm counting is difficult!"
If there is a drop in sperm count, it's not clear what would be causing it, either. We don't have the whole picture just yet.
Some basic questions also arise, like is this going to prove to be mostly in the 1st world industrialized nations? So, is some of it attributed to the older average age in this group? Is it associated with weight as the weights in these countries are significantly higher? However, if the cause is more an environmental exposure to let’s say estrogen like drugs building up in the water system, and an increase in other illnesses do to it. Either way the cause is apt to contribute too many other health problems if not explained by age.
..."If there is a drop in sperm count, it's not clear what would be causing it, either. We don't have the whole picture just yet...", it's Global Warming, lol, that the cause, he he...... snort. Those jeans are to tight and to warm!!!
Actually, I can see it being some kind of large pollution variable of sorts; to many estrogen type pollutions getting the environment or some other chemical. It might even be the detergent we wash our close or the plastic we hold our cell phones by.
Cell phone rays to the hypothalamus lol. Well the article and readership to follow head line. “The maya 2012 doomsday is right cell phones cause the end by reducing sperm counts.”
I'd bet it's psychosomatic: social stratification and a slow economy, no prospects. For better results, they should specifically test thieves and 1%er's since they get off on it.
Children of Men, anyone?
Nature has it's own ways to curb human growth numbers as with any other plague/infstation of the environment. The limit will be established naturally, not by humans whatever they will do to fight diseases, efforts to increase life-span, etc.