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Published 16:04 14 Mar 2016 GMT
Updated 21:30 14 Mar 2016 GMT

"It would have to be soluble so it could be taken by mouth. It would start working fairly quickly and it wouldn’t diminish libido. It would be safe even if taken for decades.
"And because some users would eventually want to have children, its impact on fertility would be reversible, with no lingering ill effects on sperm or embryos. At certain doses, it [works], but at those doses, it doesn't work for up to 20% of men, and it can cause side effects, including weight gain and a decrease in 'good' cholesterol."Also in the works is a long-acting, non-hormonal contraceptive gel called Vasalgel which is injected into the scrotum and can stop sperm from being ejected upon orgasm. Sounds fun... A survey conducted last year by the Kaiser Family Foundation revealed that 66% of men would be willing to take male birth control pills. Meanwhile, only 43% were on board with the Vasalgel shot, while a mere 36% were open to getting injected with implants.
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