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11
votes
1answer
485 views

Do excreted oral contraceptive compounds in drinking water contribute to male infertility?

I've run across several claims about oral contraceptives ("the pill") and how the residuals that enter municipal water supplies via urination cannot be filtered out and may have detrimental effects on ...
11
votes
2answers
566 views

Are sperm counts in men decreasing significantly?

It is widely believed that sperm counts in men are suffering a significant decline over the last century (e.g. see this article in the Independent which assumes the decline is happening and the only ...
13
votes
1answer
1k views

Intelligence and number of children?

This wikipedia article on fertility and intelligence (citation missing from wiki article needed for proving this claim) indicates that intelligent people are less fertile. Is this correlated to the ...
14
votes
2answers
3k views

Does riding a bicycle reduce sperm count/male fertility?

Related Does using a laptop on your lap lower your sperm count? Can switching from briefs to boxer shorts improve your fertility? I've heard that riding a bicycle, especially for extended ...
20
votes
1answer
2k views

Can switching from briefs to boxer shorts improve your fertility?

The advice to wear boxer shorts instead of briefs seems reasonable at first glance, since for testes to produce sufficient quality and quantity of sperm, the temperature of testes must be ...
8
votes
0answers
281 views

Does frequent cell phone use reduce the sperm count of men? [duplicate]

Possible Duplicate: Does the presence of a cellphone affect sperm count or heart rate? Is cell phone use harmless or is there a chance that it lowers the sperm count of men? New ...
3
votes
1answer
447 views

Can an ovulation calculator increase your likelyhood of getting pregnant?

An ovulation calculator is something that apears on most pregnancy and baby sites on the internet. Searching for the term "ovulation calculator" on Google produces over 2 million results. This ...
8
votes
2answers
576 views

Is the fertility rate of women who work over 2 children anywhere in the world?

Does women working outside the home automatically drive below the replacement threshold? In a developed country, to ensure at least the replacement of its population, the fertility rate needs to be ...
21
votes
1answer
2k views

Does using a laptop on your lap lower your sperm count?

It is sometimes claimed that using a laptop on or in proximity of testicles can result in a lower sperm count. This Health.com article claims: Can a laptop computer really affect a man’s ability ...