An American anti-vaccine group is claiming that parents who vaccinate their children face the possibility of their children becoming gay.

VacTruth last week posted on its Facebook page that it was “a legitimate question some people want to learn more about.”

“For the readers who have asked this question,

Do you think vaccinating a child with vaccines that are made up of endocrine disrupting chemicals, can affect the outcome of a person’s sexuality? Homosexuality is found in nature in other species and has occurred in populations long before the advent of vaccines. Some believe vaccines affect sexuality and some don’t. It is known that vaccines do disrupt hormonal function and can cause fertility and thyroid problems, so this is a legitimate question some people want to learn more about.”

To date, there is no scientific evidence that vaccines cause autism or a change in sexual orientation.

The American Psychological Association states: “There is no consensus among scientists about the exact reasons that an individual develops a heterosexual, bisexual, gay or lesbian orientation.

“Although much research has examined the possible genetic, hormonal, developmental, social and cultural influences on sexual orientation, no findings have emerged that permit scientists to conclude that sexual orientation is determined by any particular factor or factors.

“Many think that nature and nurture both play complex roles; most people experience little or no sense of choice about their sexual orientation.”

VacTruth, which has more than 62,300 likes on its Facebook page, claims it aims to help parents find information on vaccine ingredients and reactions.

It is run by Jeffry John Aufderheide, a former rescue swimmer in the US Navy who apparently has no discernible medical or scientific qualifications.

He claims that vaccines have stopped his son, Brandon, from reaching his “developmental milestones.”