A new study has suggested that good-looking men may have poorer-quality sperm, The Huffington Post reported.
The study was published in the September 2014 issue of the Journal of Evolutionary Biology.
"To [the] best of our knowledge, this is the first demonstration of the phenomenon,"
the Huffington Post quoted study co-author Dr. Jukka Kekalainen as saying.
Kekalainen is an adjunct lecturer in the Centre for Evolutionary Biology at the University of Australia in Crawley.
In their study, the researchers also wanted to see if men's sperm quality was related to their handsomeness. "And we found that in fact it is," Kekalainen said in the email.
Researchers from Spain, Australia, and Colombia analyzed semen on 50 Caucasian students recruited from the University of Valencia.
They then showed photos of the men's faces to heterosexual men and women in their 20s.
Female evaluators were asked to rate the men as if they were looking for a long-term mate while the male evaluators were asked to rate the men as they thought women would rate them.
The researchers also made an "anthropometric analysis" of the facial characteristics of the 50 men, measuring their eyes, cheekbones and nostrils as well as other "masculine" features.
Handsomeness vs. sperm production
They found that men who were perceived to be more sexually attractive also had poor semen quality, possibly because the high levels of testosterone that aid in the development of more masculine facial features also hinder proper sperm production.
According
to the study's abstract:
"(F)acial masculinity was negatively associated with semen quality. As increased levels of testosterone have been demonstrated to impair sperm production, this finding may indicate a trade-off between investments in secondary sexual signalling (i.e., facial masculinity) and fertility..."
However, The Huffington Post also noted that the study doesn't suggest that women go for less handsome guys—but that's a topic for a whole new set of research.
"we would need more studies to demonstrate the causation and mechanism behind this finding...before giving any mating tips to the females," Kekalainen said.
https://ph.news.yahoo.com/humanap-ka...094806929.html
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Mga babae, you now have two options.... hehehehe
1. Mag antos ka sa nawong nga murag gi-kumot sa Ginoo, or...
2. Mag antos ka nga way liwat.
Study Shows Handsome Men have Poor Semen Quality
Originally Posted by Wynna
that takes a lot of wetting! hahahaha
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