Eating yoghurt could make men more virile (finds a study on 'swaggering' mice)
Vanilla yoghurt gave male rodents 'swagger' and protruding testiclesFemales became better mothers with shinier fur
09:10 GMT, 9 May 2012
Could eating pro-biotic yoghurt make men sexier and more virile Studies on mice suggest it
Eating probiotic yoghurt is known to calm troubled tummies – now scientists have found it could boost virility as well.
Scientists from the Massachusetts Institute of Technology found male mice fed the vanilla-flavoured dessert had a certain 'swagger' when they walked.
They discovered these mice had testicles that were five per cent higher than other mice on a normal diet and 15 per cent heavier than junk-eating males.
What is more, in mating experiments the yoghurt-eating males inseminated their partners more quickly and produced more young than control mice.
Yoghurt-fed female mice benefited too – they had larger litters and were more successful at weaning their pups.
The findings could have implications for human fertility and the team will next look at the association between yoghurt and semen quality in men.
The researchers stumbled across the interesting finding when studying the effects of yoghurt on obesity.
In a bid to prove whether yoghurt could help stave off age-related weight gain in humans, researchers Eric Alm and Susan Erdman fed pro-biotic vanilla yogurt to mice with some unexpected results.
The yoghurt eating mice had shinier fur than their non-dairy fed siblings and the male mice were described as all of a sudden having a 'swagger.'
'We knew there was something different in the males, but we weren’t sure what it was at first,' Ms Erdman told ABC News.
'You know when someone’s at the top of their game, how they carry themselves differently Well, imagine that in a mouse.'
One of the now classic Yeo Valley advertisements depicting hunky farmers, although the new study showed that it the probiotic bacteria in the yoghurt might have played its part
It could perhaps would explain the sex-appeal in
recent yoghurt advertisements such as the strapping farmers singing for Yeo Valley.
Other beneficial effects included slimmer bodies and shinier fur in both sexes as yoghurt-fed mice had 10 times the active follicle density of the control group.
Not only did the girl mice sport the
shiny fur coat and considerably slimmer physique of their male
counterparts, they also tended to be better mothers to their (as a
result of their dairied-up partners) larger litters.
think it’s the probiotics in the yoghurt,' Mr Alm explained.
those organisms are somehow directly interacting with the mice to
produce these effects.'
Originally carried out to fight obesity in humans, the results of the study were completely unexpected. The scientists think the effects came from the probiotic bacteria in the yoghurt