Having An Older Brother Linked To Male Homosexuality

Having An Older Brother Linked To Male Homosexuality

The study would have to be replicated in order to test out its verifiability, but it possibly supports a 2006 study showing that a man's chance of being gay goes up by about a third with each older brother he has (though that study didn't explain why).

Earlier research has shown that the more older brothers a boy has, the more of a chance that boy will be attracted to men.

According to the study, when a woman is pregnant with her first male child, a protein linked to the Y-chromosome (NLGN4Y) is released that is required for the development of the baby's brain. The mother's body thinks that the protein is a foreign substance, and the immune system reacts accordingly by producing antibodies.

And it is the "Y" chromosome which creates the biological differences that make a child male that triggers an immune reaction in a mother.

"Gay men have, on average, a greater number of older brothers than do heterosexual men, a well-known finding within sexual science".

For this study Bogaert and his colleagues looked at 142 women and 12 men between ages 18 and 80 years and checked for the protein NLGN4Y and the antibodies against it.

If a mother with a buildup of these antibodies becomes pregnant with another boy, these antibodies may pass through to the fetus and affect its brain development.

The antibody levels of two proteins expressed in the male fetal brain, PCDH11Y and two forms of NLGN4Y, were measured.

Researchers did not see a similar pattern in families with adopted brothers, so scientists started to think there must be a maternal developmental explanation.

The study suggested the effect of these antibodies on the protein they target leads to changes in parts of the brain that have an influence on sexual orientation. "Along with more deeply understanding the exact origin of the older brother effect, it helps solidify the idea that, at least in men, there's a strong biological basis to sexual orientation".

"This is a very important study because it provides a plausible mechanism to explain the fraternal birth order effect, perhaps the most firmly established phenomenon related to human sexual orientation", says Marc Breedlove, professor of Neuroscience at Michigan State University, said, the New Scientist website reported. You may have your older brothers to thank. "The current study adds to the growing scientific consensus that homosexuality is not a choice, but rather an innate predisposition", Bogaert said.

Related News:

  • Catherine Zeta-Jones celebrates Kirk Douglas' 101st birthday with sweet photo

    Catherine Zeta-Jones celebrates Kirk Douglas' 101st birthday with sweet photo

    A second cake resembled the red boxing gloves that the legendary actor wore in Champion for his first Oscar-nominated performance. The Hollywood icon, Kirk Douglas , celebrated 101 years and such an anniversary can not be overlooked by his family members.
    Giant ancient penguin was human-size

    Giant ancient penguin was human-size

    Whether Kumimanu biceae is the tallest penguin ever is up for debate, but there's no doubt that it was a seriously imposing beast. Mayr and his team discovered the bones in the Otago region on New Zealand's South Island, once thronging with giant birds.
    Chris Gayle hits record sixes in Bangladesh Premier League final

    Chris Gayle hits record sixes in Bangladesh Premier League final

    He smashed 146 off 69 balls in partnership with former Blackcaps captain Brendon McCullum , who scored a more sedate half century. Things could have gone different though, had Shakib taken a catch to dismiss Gayle with the score on 28.
  • YouTube Xbox One X Update Introduces 4K 60 FPS Support

    YouTube Xbox One X Update Introduces 4K 60 FPS Support

    Google is finally pushing out a new update for its Official YouTube app available for Xbox One users. Now their has been no ETA given as to when Google will push out HDR Support for Xbox One consoles.

    "Skirball Fire" causes LA Jewish Institutions to close

    About 700 homes were evacuated at one point, though all mandatory evacuation orders were lifted by Tuesday, the LAFD said. The Skirball Fire began as a result of an illegal cooking fire at an encampment, according to the Los Angeles Times.
    Chelsea reportedly plot January approach for Barkley

    Chelsea reportedly plot January approach for Barkley

    Chelsea are set to rekindle their interest in Everton attacker Ross Barkley in January, according to reports in The Sun . Tottenham remain interested too, with Barkley seeking game time away from Goodison Park .
  • Varun Dhawan turns tailor for Anushka Sharma-starrer Sui Dhaaga

    Varun Dhawan turns tailor for Anushka Sharma-starrer Sui Dhaaga

    Varun Dhawan is also busy with October , which is an upcoming romantic drama film directed by Shoojit Sircar. And this should come as a new challenge to Varun, who's chiefly essayed casual youth icon roles in the past.
    Brzezinski: Trump 'Literally Sexually Harassed' Gillibrand

    Brzezinski: Trump 'Literally Sexually Harassed' Gillibrand

    Jeanne Shaheen, also weighed in on Twitter, writing that there is "nobody tougher than @SenGillibrand & she won't be intimidated". Mazie Hirono of Hawaii also took to Twitter to hit back against the President and echo Gillibrand's call for resignation .
    Rose McIver's 'so bad it's good' Christmas Prince movie has gone viral

    Rose McIver's 'so bad it's good' Christmas Prince movie has gone viral

    Netflix, after all, produced and promoted the movie, which is in the vein of an uplifting, unapologetically cheery Hallmark film. A Christmas Prince is one of Netflix's original movies that only came out just last month (albeit to disastrous reviews).
  • Kuwait says global oil cuts can halt if market balances by June

    Kuwait says global oil cuts can halt if market balances by June

    Brent crude futures, the global benchmark for oil prices, were down 15 cents, or 0.2 percent, at $63.25 a barrel. USA crude futures recently rose 20 cents, or 0.35%, to $57.56 a barrel on the New York Mercantile Exchange.

    Rollicking 'Star Wars: The Last Jedi' Introduces Welcome Shades Of (G)Rey

    Ridley's Force-awakened Rey momentously proffers a legendary lightsaber to Hamill's Skywalker, who is puzzled by her presence. Johnson has been handed the " Star Wars " ball and played a lovely game (before passing back to Abrams for episode IX ).
    Woman arrested on suspicion of looting home in Bonsall wildfire area

    Woman arrested on suspicion of looting home in Bonsall wildfire area

    San Diego reported a dozen units were destroyed in Fallbrook, California's Rancho Monserate Mobile Home Park. Friday evening, Cal Fire said the fire was 15 percent contained and holding at 4,100 acres.


Most liked

America's healthiest and least healthy states
The nation's premature death rate - the number of years of potential life lost before age 75 - increased 3% since 2015. West Virginia, on the other hand, crept into the worst five after replacing Oklahoma, which now ranks as No. 43.

Bella Thorne says she was molested
On Friday, while responding to a comment on Twitter , Bella Thorne revealed she is a survivor of sexual abuse. So it wasn't Disney ", she wrote .

Tag: Intex Elyt E6
This phone comes with an 8 MP front camera, which contains the LED flash too for the low-light selfies and video callings. The smartphone is priced at ₹6,999 and will go on sale in India starting 15th December exclusively via Flipkart .

Children as young as eleven are gambling according to report
The Gambling Commission's annual report has, for the first time, looked at the problem of so-called "skin betting". Most commonly, children were using fruit machines, National Lottery scratch cards or placing private bets.

Twitter to let users make tweet threads more easily
Tap it to add more tweets to your original post so you can string them together into one long thread , and tweet it all at once. Threading - sometimes referred to as "tweetstorms" - is the description given to a series of individual tweets linked together.

Baby born mid-air during PIA's Multan bound flight
He further clarified that the woman did not look full-term to the crew staff the time when the lady boarded the plane. According to reports, the flight was diverted to Karachi due to bad weather.

Analysts Review: Frontier Commun Cp (FTR)
Frontier Commun Cp (NASDAQ: FTR ) shares traded 6.56% up during most recent session to reach at the closing price of $9.75. The utilities provider reported ($0.08) EPS for the quarter, missing analysts' consensus estimates of ($0.05) by $0.03.

What Are Analysts Suggestions On Union Pacific Corporation (UNP)
The company reported the earnings of $1.5/Share in the last quarter where the estimated EPS by analysts was $1.49/share. The stock of Union Pacific Corporation (NYSE: UNP ) has "Buy" rating given on Wednesday, November 2 by Deutsche Bank.

1st ODI: Rohit blames batsmen for India's defeat
We were having a bad run for the last 12-13 ODI's and it is time to put our heads up and go up from here", he said. Good chance for us as we are leading the series.

Political reporter Ryan Lizza fired by The New Yorker for misconduct
Lizza was The New Yorker's Washington correspondent between 2007 and 2017, according to his biography on the magazine's website. It's unclear what the "improper sexual conduct" refers to, but Lizza issued a statement denying any improprieties.

Devin Hester Announces Retirement from NFL After 11-Year Career
His most productive season as a wideout came in 2009 when he had 57 receptions for 757 yards and three TDs. Kick return specialist Devin Hester has officially announced his retirement after 11 seasons in the NFL.

Late-night host Kimmel holds son, pleads for health care
It's great to see Billy up and about again, and hopefully, he's on his way to full health. "He has one more surgery", Kimmel said. Kimmel said it's "disgusting" that Congress is putting tax cuts for millionaires ahead of the lives of children.

Hanukkah Quotes: 14 Sayings To Celebrate The Festival Of Lights
An additional holder, referred to as the shamash , is slightly separated from the rest and used to light the other branches. Latkes or potato pancakes paired with applesauce and sour cream, or jelly doughnuts are favorites at Hanukah celebrations .

San Francisco's mayor, Ed Lee, dead at 65
Lee, an attorney, had worked for the San Francisco Asian Law Caucus, advocating for immigrant rights and affordable housing. He was taken to Zuckerberg San Francisco General Hospital, where he was pronounced dead at 1:11 a.m., officials said .

The Cure Announce Massive One Off 40th Anniversary Show
The Twilight Sad were especially hand-picked by The Cure as the support on their entire 2016 world tour. The Cure are to headline the Barclaycard Presents 2018 British Summer Time Festival .