NO matter how high their sex drives are, most men can’t go again for a second orgasm without a bit of a break.
For years, this has been blamed on a hormone called prolactin, but scientists have just busted this long-held theory after a recent study on mice.
The long-believed theory on why men need to wait before having sex for a second time has just been debunked by scientistsCredit: Getty Images – Getty
The new research is bad news for men, who thought the old research held the secret to a speedy second round after ejaculation.
The length of break varies in males from around 15 minutes for an 18-year-old to up to 20 hours for a male in their 70s.
However, females can have sex multiple times in a row and even orgasm multiple times in a row.
For decades, it was thought that prolactin, which spikes right around the time of ejaculation, is to blame for men having to wait – but this may now not be the reason.
For years, the ‘refractory period’ between men having sex again after ejaculation has been blamed on a hormone called prolactinCredit: Getty – Contributor
In 2013, a study suggested that high levels of prolactin were linked to erectile dysfunction and a lower sex drive.
However, scientists at the Champalimaud Centre for the Unknown in Portugal recently found that neither boosting nor cutting prolactin hormone levels in mice made a difference in their ability to have sex again or the “refractory period” between intercourse.
The author of the new Portguese study, Dr Susana Lima, told science journal Nature: “A direct link between prolactin and the male post-ejaculatory refractory period was never directly demonstrated.
“Still, this theory has become so widespread that it now appears in textbooks as well as in the popular press.”
Dr Susana concluded it’s very “unlikely” that the hormone dictates a man’s ability to go again.
This means we still don’t know what causes this need for men to have a break after ejaculation or how to shorten the time needed before a second session.
Alternative theories suggest hormones like oxytocin, serotonin and dopamine could be involved, but there is no concrete evidence to prove this.
The length of break varies in males from around 15 minutes for an 18-year-old to up to 20 hours for a male in their 70sCredit: Getty – Contributor
Prolactin is still thought to have some effect on sexual arousal and function.
In females, the primary function of prolactin is to help milk production to feed babies.
Dr Susana said other theories must now be tested, and added: “Now we can move on and try to find out what’s really happening.”
There are currently no FDA-approved treatments for altering the refractory period in men, though there is some evidence that erectile dysfunction drugs like Viagra may shorten it.