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Fertility rates drop


By sixteentons - Posted on 29 October 2009

Yeah!!

Fertility rates are dropping world wide, with an estimated rate of 2.1/ woman by the end of 2050.

Good news for the environment (hopefuly not too late).

I don't know what sort of news for the economy..

http://www.economist.com/opinion/displaystory.cfm?story_id=14743589

That's it-- I'm switching to boxers.

LOL!

Well, we've already bagged our three. One of them is even an adult now. *sigh*. 

"If all mankind minus one were of one opinion, mankind would be no more justified in silencing that one person than he, if he had the power, would be justified in silencing mankind."  ~John Stuart Mill, On Liberty, 1859

Did they give any reasons for this fertility problem?

There are some countries who have banned Bisphenol A in baby bottles, sports bottles, and can liners. Apparently this is a very big concern as it mimics female hormones. Not good if you are a little boy.

I read someplace that men under 30 are poor candidates for sperm donations due to the low motility of their swimmers.

It is disturbing to know that manufacturers will use these chemicals without knowing the long term effects.

 

Oops.  Sorry, should've been clearer.

"Fertility rate" is different than fertility. The article explains the difference about midway through.  It states  "(fertility rates) represents the number of children an average woman is likely to have during her childbearing years.

The key term there is "is likely to have", not has the physical capacity to have (which is 19 -45 apparently).

So it is not a physiological problem with fertility so much as the reality that as countries prosper and become more mechanized, large families no longer financially benefit the parents.  Children are no longer needed to help in the fields, and with societies like much of Europe and the US, the elderly no longer need to rely on their children to survive when they can no longer fend for themselves. Therefore the cost of feeding, clothing and educating large families are no longer a net gain for the parent.

As far as I know fertility in humans is pretty unaffected, amphibians on the other hand..

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