Boys wh olr brothers more likely to be gay: study

MEN WH OLR BROTHERS ARE MORE LIKELY TO BE GAY, STUDY SUGGTS

* gay older brothers *

Men wh olr brothers are more likely to be gay, acrdg to a study published Wednday the journal Proceedgs of the Royal Society B. This new report builds upon prev rearch regardg male birth orr and homosexualy, though there is still no cisive ncln as to why there’s a lk between the cross-analyzg data om 10 scientific studi wh more than 5, 000 subjects, rearchers found that men wh olr brothers were 38 percent more likely to intify as gay. ”The study, which pared the probabily of the youngt brother a two-son fay beg gay as pared to the olst son, did not clu female subjects, as prev rearch has tablished that women do not fluence the sexual orientatn of their younger siblgs, acrdg to this study did not terme a ncrete reason for the rrelatn between a man havg an olr brother and intifyg as gay, Blanchard said that “pots toward the need for more rearch on the 'maternal immune hypothis'” — a theory Blanchard troduced 1996 that suggts that a mother is exposed to “male-specific substanc” durg pregnancy wh or the birth of a son.

Acrdg to proponents of the theory, the mother’s immune rponse is changed durg the pregnancy of a boy, creasg the likelihood that a subsequent male child would be gay. A new study has found some of the strongt evince to date that people wh olr brothers are more likely to be gay, providg some of the bt evince to date supportg the aternal birth-orr effect (FBOE) and also fdg evince of for both lbians and gay men. In the first-ever laboratory study of mothers of gay men, the rearch was prompted by more than two s of statistil data examg the 'olr brother effect' which shows that blogil olr brothers—but not olr sisters—crease the odds of homosexualy later-born mal.

PEOPLE WH OLR BROTHERS ARE MORE LIKELY TO BE GAY ACRDG TO EXPERTS

The study, "Male Homosexualy and Maternal Immune Rponsivy to the Y-Lked Prote NLGN4Y, " was published Monday, Dec.

The current study adds to the growg scientific nsens that homosexualy is not a choice, but rather an nate predisposn. The team of psychologists and immunologists tted 16 women wh no sons, 72 mothers wh heterosexual sons, 31 mothers of gay sons wh no olr brothers, 23 mothers of gay sons wh olr brothers, and a ntrol group of 12 men. The team found that mothers of gay sons, pecially those wh olr brothers, had signifintly higher antibody levels to both forms of NLGN4Y than did the ntrol sampl of women, cludg mothers of heterosexual sons.

However, the psychologist utns that the effects are most and the likelihood of a male child beg born gay is still small—even if they have multiple male siblgs. Male homosexualy and maternal immune rponsivy to the Y-lked prote NLGN4Y, Proceedgs of the Natnal Amy of Scienc (2017).

HAVG OLR BROTHERS CREAS MEN’S LIKELIHOOD OF BEG GAY

Study nfirms lk between the number of olr brothers and creased odds of beg homosexual (2017, December 12). Earlier studi have noticed that gay men often have olr brothers.