Questions tagged [fertility]

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10
votes
1answer
704 views

Are men more attracted to women who are ovulating over those who are not?

Background In 2016, a Business Insider article by Rebecca Harrington asserted that there have been multiple studies supporting the notion that men are preferentially attracted to women who are ...
5
votes
1answer
532 views

Can using heated car seats reduce fertility?

A family member warned me not to use heated car seats, since they cause infertility and cancer in both men and women. I searched the internet for a source for his claims and I found this Telegraph ...
8
votes
1answer
387 views

Did the Polish birth rate soar because of a curfew imposed in the 1980s?

The Economist states: Alternatively, jokes its president, Cezary Kazmierczak, it should cut off power two nights a week to keep Poles at home in the evening. When a curfew was imposed in the ...
2
votes
1answer
507 views

Do 38% of couples conceive within one month of trying to conceive?

This article has the following claims about success rates of couples trying to conceive. One study, published in the journal Human Reproduction, followed women who were trying to get pregnant by ...
2
votes
0answers
54 views

Do cellphones damage male fertility? [duplicate]

According to this article wearing cellphones in the front pocket can cause men lose their fertility. Men using a cellular phone for more than one hour a day double the risk of their sperm count ...
1
vote
0answers
76 views

Are cell phones harmful to male fertility if kept in trousers pocket? [duplicate]

Several studies or press articles suggest that keeping a cell phone in a male's trousers pocket (and cell phone usage in general) may harm that men's fertility (increase sperm issues): http://www....
8
votes
2answers
4k views

Can a single sperm travel alone to an egg and fertilize it?

WebMD writes in its Sperm FAQ: It takes just one sperm to fertilize an egg and achieve a pregnancy, but for each sperm that reaches and fertilizes an egg, there are millions that don't. Parenting....
4
votes
1answer
350 views

Is the egg much more active during conception than commonly assumed?

David H. Freedman writes in New Theory on How The Aggressive Egg Attracts Sperm: As they mill around, the egg selects one and reels it in, pinning it down in spite of its efforts to escape. It’s no ...
6
votes
0answers
297 views

Does marrying a relative confer fertility benefits?

While doing research today I run into this piece: An Association Between the Kinship and Fertility of Human Couples Previous studies have reported that related human couples tend to produce more ...
14
votes
1answer
633 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 ...
12
votes
2answers
854 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 ...
15
votes
1answer
3k 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 ...
15
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 periods of ...
21
votes
1answer
3k 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 lower ...
9
votes
0answers
310 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 independent ...
3
votes
1answer
576 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 "tool"...
8
votes
2answers
794 views

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

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 ...
23
votes
1answer
3k 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 to ...