Premature ejaculation? Blame it on your gene, for a new study has revealed that the rapidity of ejaculation in men is genetically determined.
According to lead researcher Marcel Waldinger, "This theory contradicts the idea, which has been common for years, that the primary form of premature ejaculation is actually a psychological disorder.
"The results of our study confirm the genetic theory and may contribute to possible gene therapy against premature ejaculation."
Waldinger and colleagues at Utrecht University have based their findings on an analysis of 89 Dutch men with premature ejaculation, who were also compared with a control group of 92 males, the 'Journal of Sexual Medicine' reported.
In the study, the female partners of the subjects used a stopwatch at home to measure the time until ejaculation each time they had intercourse for a month.
In men who suffer from premature ejaculation, the researchers found that the substance serotonin was less active between the nerves in the section of the brain that controls the ejaculation.
Moreover, a gene which had already been discovered, namely 5-HTTLPR, appeared to be responsible for the amount and activity of serotonin, which meant that it controlled the rapidity of ejaculation.
Three types of the gene exist: LL, SL and SS. The study showed that the LL type causes a more rapid ejaculation. On average, men with LL ejaculate twice as quickly as men with SS, and also almost twice as quickly as men with SL.
"This study applies to men who have always ejaculated prematurely from their first sexual contact onwards and not for men who started suffering from this later on in life," the 'ScienceDaily' quoted Waldinger as saying.