Study: Men With A Lot Of Brothers Are More Fertile And Have Bigger Families

Study: Men With A Lot Of Brothers Are More Fertile And Have Bigger Families
World
Like Us On Facebook
Like Us On Facebook

New research shows that men with a lot of brothers are more likely to have a lot of children themselves, as they are likely to be more fertile.

The findings were published in the Asian Journal of Andrology, and the research also support the theory that parents with genes for good male fertility are more likely to have boys.

Experts from the University of Sheffield compared the traveling speed of the sperm of 500 men with their family make-up.

“We found the greater number of brothers rather than sisters a man has, the faster his sperm is, increasing the likelihood of fertility,” said Dr. Allan Pacey. “Lots of brothers is also an indication that the man’s parents have strong male fertility genes, and they would then be passed on  to the son. 

“The results are very surprising and could provide genetic insights into why some men are more fertile than others.

“It does, however, give food for thought about the importance of genetics for sperm motility and may open the way to more studies in this area,” he added.

Sperm activity, or “motility,” is known to be a major factor influencing male fertility.  


“We are very intrigued by this finding and hope other researchers examine their data sets in a similar fashion,” said Jon Slate, professor of evolutionary genetics at the University of Sheffield.


“If our results can be replicated we think it provides some evidence that humans have experienced what evolutionary biologists like to call ‘sexual conflict.’ The idea behind this is that genes that make males reproductively successful make females reproductively unsuccessful, and vice versa.”

The researchers said it did not mean men with a large number of sisters should worry, and they did not look at whether women with lots of sisters are likely to be more fertile, as it is much more difficult to measure.

It does, however, make sense that a man with many brothers would be more fertile, as his father clearly proved to be.

James Gilbert | Elite.

Share Tweet
React
Like Us On Facebook
Like Us On Facebook

Julian Sonny

From the sandy beaches of Hawaii, to the streets of New York: Julian has seen it all. His lifetime of travels has given him a broad scope of knowledge and an eclectic taste unlike any other in the tri-state area. Julian has often been compared to cultural icon, The Rock, because of his unequivocal work ethic and warrior-like stature.

More In World

World Emily Arata

This Hilarious ‘Grease’ Parody Is All The Convincing You Need For Legalized Weed

Sandy and Danny have never looked quite as marijuana-friendly as they do in 4 Twenty Today’s shot-for-shot parody of “You’re the One That I Want” from “Grease.” 4TT is a weed-friendly YouTube news channel that wholeheartedly supports Florida’s Amendment 2, which decriminalizes marijuana use for those with medical marijuana authorization. Sandy’s new incarnation, Mary Jane, […]

Also On Elite

World

John Oliver Has The Most Logical Solution For Taking Down ISIS Yet (Video)

John Oliver has finally found a solution for taking the Islamic State out of the picture. While the US and Britain debate how to stop the militant group after dealing with so much chaos already, one country is just sitting around, looking beautiful and teaching its pets to surf. Here’s the HBO host explaining why […]

Humor

Dad And Daughter’s Dance Routine To ‘All About That Bass’ Is Beyond Epic (Video)

For all the time people spend b*tching and moaning about their parents, it seems like there’s nothing the Internet loves more than touching (or, sometimes, painfully and hilariously real) vignettes of families bonding. Josh Rinder, 29, and his 4-year-old daughter Audrey made a video of themselves dancing to Meghan Trainor’s “All About That Bass.” As Time points […]

Food

7 Glory Snacks From The 90s That Our Kids Will Never Be Able To Understand

When thinking about the 1990s, “Legends of the Hidden Temple,” N*SYNC vs. Backstreet Boys, Nickelodeon and Spice Girls instantly come to mind. The television, the music, the fashion: All of these things define what it was like to be a 90s kid. But what about all of those amazing, tasty foods that seem to have […]

World

The ‘Hamas Vs. Hummus’ Challenge Clears Up Any Confusion Between The Two (Video)

Three Israeli soldiers have created their own hilarious version of the ALS Ice Bucket Challenge that explains the difference between a terrorist organization and a healthy snack. It’s called Hamas vs. Hummus, and the video features Israel Defense Force soldiers declaring the latter good enough to spread all over their faces, unlike the former, which […]

Sports

Slow Down, America: Johnny Football Isn’t Ready For Primetime Yet

About a month ago, I speculated about why the media is so obsessed with Johnny Manziel, the Heisman-winning quarterback who became a first-round draft pick and de facto savior of the Cleveland Browns. He’s brash and enjoying his fame like any other 21-year-old would. Two weeks into the preseason, however, it appears Johnny Football already […]