Any form of sexual reproduction resulting in the conception of a child.
11
votes
1answer
390 views
Are there more American houses with dogs than with children?
David Brooks, in his article published today in The New York Time, has claimed "There are now more American houses with dogs than with children."
I seriously doubt this claim is true, especially ...
2
votes
0answers
271 views
Does inducing labour increase the risk that a C-section is required?
It seems that there is conflicting evidence on whether inducing labour causes an increase in the likelihood that a caesarian section becomes medically necessary.
Let me quote two authorities:
...
4
votes
1answer
1k views
Can a woman become pregnant through splash pregnancy?
I have read that there is something called "splash pregnancy" which is when you get pregnant without having penetration. So far I have only found anecdotal stories about it, but is there any ...
16
votes
1answer
2k views
Does diet affect the taste of semen?
After reading the latest explosm comic I realized that I often heard about this claim, but never read anything drawing from credible sources.
Eating pineapples makes semen taste better.
On the ...
6
votes
0answers
351 views
Can a significant human population be started with only one couple? [closed]
Is it scientifically possible to nurture a sustainable human population growth from only one pair of individuals? (For instance two survivors on an island, the biblical Adam and Eve or Noah's family, ...
4
votes
1answer
1k views
Does avoiding ejaculation before conceiving help in healthier and stronger children?
I have read this from friends and is mostly around in subcontinent that in order to get healthier babies (with no defects and good health), one should avoid ejaculation for a couple of days before ...
6
votes
1answer
2k views
Does pre-ejaculate typically contain sperm?
It is typically believed that pre-ejaculate contains sperm, for example
Guys leak a bit of sperm out of the penis before ejaculation. This is called pre-ejaculate.
source
Does a man's ...
8
votes
0answers
569 views
Does sexual position affect the chances of conception?
I have seen the claim that some sexual positions are better for getting pregnant than others. For example this article on how to have baby-making sex claims:
Be a missionary
It might seem ...
1
vote
0answers
311 views
Can biorhythms and pH fluctuations be used to select the gender of a child?
Smart Stork claim to be able to help couples select the gender of their future child:
Our success rate in gender selection? Is still over 95%!
Their technique relies of biorhythms:
Smart ...
7
votes
1answer
6k views
Do sperm that carry male chromosomes swim faster?
The claim is that human sperm has different physical characteristics (i.e. phenotype) depending on whether it is carrying an X or Y chromosome.
One theory is that sperm that carry the male ...
11
votes
1answer
378 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 ...
16
votes
1answer
546 views
Are 99% of sperm 'kamikaze', as described by Robin Baker?
From the book Sperm Wars, by Robin Baker:
Very few (less than 1 per cent) of the sperm in a human ejaculate are the elite, fertile 'egg-getters'. The remainder are infertile 'kamikaze' sperm whose ...
11
votes
2answers
480 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 ...
1
vote
1answer
3k views
Is it true that eating sour means that you will have more girls?
I don't know about you, but I heard this one day. It was because I was sucking lemons, and someone was like, "Why do you suck lemons, isn't it soooo sour?". I said it was very sour, but I liked sour. ...
14
votes
2answers
2k 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 ...
2
votes
1answer
399 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 ...
20
votes
1answer
1k 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 ...
