Curious

BBC NEWS | Health | Genes blamed for early first sex

This study claims to have likely identified a significant genetic component behind the age at which teenagers first have sex:

Jane Mendle, professor of psychology at the University of Oregon, who led the study said: "The association between father's absence and children's sexuality is best explained by genetic influences, rather than by environmental theories alone.

"While there is clearly no such thing as a 'father absence gene', there are genetic contributions to traits in both mums and dads that increase the likelihood of earlier sexual behaviour in their children.

"These include impulsivity, substance use and abuse, argumentativeness and sensation seeking."

If true, how is sex education ever going to adequately address those issues?

Some others question the conclusion of this study:

Simon Blake, from the sexual health charity, Brook Advisory Centre, took issue with the idea that genes were the overriding factor in early sex.

He said: "We know from research that factors associated with young people having first intercourse at a younger age are: lower educational achievements; friends and the media being the main source of information about sex education; socio-economic status; early sexual experience and the earlier age at which girls start their periods.

On that last point, I'm not sure if it is widely accepted that father's presence in the house seems to somehow delay the start of menstruation. I wonder how big a factor that alone may be for accounting for early sex in girls?

Teenagers are very odd animals.