Having older brothers could increase the likelihood of being gay

Having older brothers could increase the likelihood of being gay

It's certainly not the first time scientists have noticed the pattern of gay men having older brothers, however this is the first time that a potential biological explanation has been discovered.

The research team suggested that with every male baby some women have, these antibodies build up in their bodies.

Researchers think it's possible that when a woman gets pregnant with her first boy, this Y-linked protein gets into her bloodstream. The researchers collected blood samples from 142 pregnant women and tested them for antibodies to a specific brain protein, known as NLGN4Y, which is only produced in males.

Bogaert and his team found the highest concentration of antibodies to NLGN4Y in women with gay younger sons with older brothers, compared with women who had no sons or only heterosexual sons.

Even so, that's not to say that men with more older brothers are automatically gay.

Of course, the findings don't mean that all men with older brothers will be gay, and the researchers admit that further studies are required, but it's intriguing nonetheless.

The team thought NLGN4Y would be an ideal candidate due to its significant part in how neurons communicate with one another, making it comparatively simple for antibodies to detect it.

"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.

The researchers analyzed plasma from mothers, half of whom had gay sons; women with no sons; and men in order to find antibodies for the protein NLGN4Y, which is found in men.

J. Michael Bailey, a professor in the Department of Psychology at Northwestern University, thinks the latest research is important. This effect has been termed the "fraternal birth order effect". They explain that there are several factors that determine the sexuality of an individual. At increased concentrations, there is a chance that their impact on the protein they target results in an adjustment in the development of the brain, which can influence sexual orientation.

Related Articles

  • November inflation up at 4.88%, factory output growth dips

    Inflation's sharp rise over the past year or so is directly related to Britain's vote in June 2016 to leave the European Union . It said then that inflation was near its peak and would then fall slowly over the next three years to just above 2 percent.

    Intel Gemini Lake Pentium Silver And Intel Celeron Processors

    You will have to watch out for value-packed pre-built systems packing these chips, which will emerge during Q1 2018, says Intel. The processors are said to be highly power efficient and thus the mobile SKUs will afford " great battery life ".
    Merseyside derby; Liverpool plays 1-1 draw against Everton

    Merseyside derby; Liverpool plays 1-1 draw against Everton

    A first Merseyside derby experience for local-born Kenny was an enjoyable one for the 20-year-old academy graduate. Life is too short for grudges. "I don't want anyone here who doesn't want to be here".
  • Arsenal Haven't Offered Mesut Ozil Final Contract - Arsene Wenger

    Arsenal Haven't Offered Mesut Ozil Final Contract - Arsene Wenger

    Wenger added that a final offer has NOT been extended to either player. "I said that many times [that I want Alexis Sanchez and Mesut Ozil to stay] and that's all we can say".
  • Business owners thankful for denial of rally permits

    Business owners thankful for denial of rally permits

    The list of applicants included Jason Kessler, who organized the August 12th, 2017 "Unite the Right" rally at Emancipation Park. The city also denied four other permit applications submitted by four separate people for the same weekend.

    Full moons can increase likelihood of fatal motor bike crashes

    They found 4,994 fatal crashes occurred on the nights with a full moon, which is equal to 9.10 crashes per night. Many people believe a full moon causes chaos and unusual behavior.
    Report judges West Yorkshire Police as 'good' for treating people with respect

    Report judges West Yorkshire Police as 'good' for treating people with respect

    However, during this period stop and searches on white people decreased by 78%, but only by 66% for black people. Cops use stop and search powers under Section 60 of the Criminal Justice and Public Order Act 1994.
  • Loot Boxes Are Not Considered Gambling In New Zealand

    New Zealand's Department for Internal Affairs has ruled that loot boxes don't constitute gambling. As the matter is in fact fairly new, there is no such legislature that can help resolve the case.

    Iran Urges to Foil US-Israeli 'Plan', Hezbollah Calls Washington Isolated

    The senior IRGC commander also urged all resistance movements in the region to boost their readiness to defend the al-Aqsa Mosque. In response, the Israel army said it hit Hamas military positions in the strip with tank and aircraft fire, according to RFE/RL.