evidence: Poppers Cause AIDS, the Environment Makes Boys Trans, Says Robert F. Kennedy Jr. [...] A second video getting a lot of attention shows Kennedy making wild claims about the beginnings of the AIDS crisis, blaming it on gay men and the use of poppers, an inhalant that relaxes muscles and generates a brief head rush and sensation of euphoria. "There’s a lot of people that said it is not a virus," Kennedy said. "The virus is a passenger virus, and these people are dying mainly because of poppers. A hundred percent of the people who died in the first thousand [with] AIDS were people who were addicted to poppers, which are known to cause Kaposi sarcoma in rats. And they were people who were part of a gay lifestyle where they were burning the candle at both ends."