Matthew Trevi帽o and Emily Fletcher are self-described DINKWADs 鈥 double income, no kids, with a dog. The Sacramento couple, who met and work at 新澳门六合彩内幕信息 Davis, are as committed to each other as they are to not having children, which makes reliable birth control especially important. But except for condoms or a vasectomy, all birth control options currently available are for women. Trevi帽o, 35, and Fletcher, 28, believe contraception should be more of a shared responsibility.
鈥淢aybe the burden is on the wrong side,鈥 said Trevi帽o. 鈥淚 kind of think it鈥檚 unfair, that it only lands on the women.鈥
They have been participating in a clinical trial at 新澳门六合彩内幕信息 Davis Health to test a reversible hormonal birth control gel for men. If successful, male hormonal birth control has the potential to make the responsibility of contraception more equitable. The clinical trial, funded by the National Institutes of Health and taking place at sites around the world, is currently in its fourth year at 新澳门六合彩内幕信息 Davis Health.
The hormonal gel, developed by the Population Council and the NIH, is applied to the shoulders and works by suppressing sperm production while maintaining testosterone levels. The gel works with the same principles as female hormonal birth control, which uses two hormones 鈥攑rogestin and estrogen鈥 to prevent pregnancy.
鈥淭he gel has a progestin called Nesterone, which prevents the testes from making sperm,鈥 explained Mitchell Creinin, professor of obstetrics and gynecology and a family planning specialist at 新澳门六合彩内幕信息 Davis Health. During that process, natural testosterone production also stops.
鈥淔or a man to feel normal and even be able to have sex, he needs testosterone. So, we give Nesterone plus testosterone.鈥
A careful decision
Participating in the trial wasn鈥檛 an easy decision for the couple. Fletcher had been on some form of birth control since age 12. The trial meant going off birth control at a pivotal time 鈥 just when Roe v. Wade was overturned.
鈥淚 was worried,鈥 said Fletcher. 鈥淭here was still a thought in the back of my mind that maybe this will be an issue if the drug doesn鈥檛 work and I get pregnant.鈥
Fletcher and Trevi帽o did their homework on the trial and examined the data. They both work as researchers. Ultimately, they both decided it was the right thing for themselves and for their relationship.
Zero sperm count
The hormonal gel comes in a canister about the size of a can of shaving cream, and it holds two weeks鈥 worth of doses. Trevi帽o, a former Marine, has made applying the hormonal gel part of his morning routine, squirting just a small amount on his tattooed shoulders.
The list of possible side effects from the gel is long and includes dry or oily skin, increased or decreased libido, hair growth or loss, and mood swings. Besides what may be a little weight gain from the drug, Trevi帽o has had only one other side effect.
鈥淚've only experienced increased libido,鈥 he said. 鈥淢aybe I鈥檓 just lucking out but I hope this is the case for the majority of participants. If it is, it鈥檚 definitely going to change contraception as a whole.鈥
Fletcher said she鈥檚 had to adjust to Trevi帽o鈥檚 increased libido. But she says their sex life comes with a lot less worry.
鈥淜nowing that his sperm count is essentially zero is definitely peace of mind,鈥 Fletcher said.
Researchers hoped the gel would work about as well as the female birth control pill, but it鈥檚 working even better than expected, said Creinin.
Why has it taken so long?
One of the reasons it鈥檚 taken so long to develop a male hormonal contraceptive is that unlike females who produce an egg a month, men are producing millions of sperm every day. Sperm counts must be low enough to reliably prevent pregnancy. Creinin said there鈥檚 also been a lack of investment from pharmaceutical companies and concerns regarding severe side effects from previous male hormonal birth control drugs.
Because men produce sperm constantly, it takes a longer time than female hormonal birth control for the gel to become effective. It also takes months to reverse its effect when coming off the drug.
Hundreds of couples at sites around the world are taking part in the trial, which takes nearly two years. 新澳门六合彩内幕信息 Davis researchers are currently in phase 2 of the trial, which is no longer recruiting, and are hoping to take part in a third phase of the trial, which would include many more participants.
Creinin said he thinks this trial will be a turning point for contraception and one he thought he鈥檇 never see in his career.
鈥淚 think that this probably will be that first product that comes to market,鈥 he said. 鈥淲henever it happens it鈥檚 going to create a social change in the way our society thinks about responsibility for preventing pregnancy. It will make all of us realize that both men and women truly need to participate.鈥
Trevi帽o and Fletcher share that sentiment. Trevi帽o is now in the recovery phase of the trial and off the gel. He said he鈥檇 jump at the chance to participate in a third phase of the trial. Until then, he hopes it won鈥檛 be too long a wait before it鈥檚 an option for every couple.