There was an interesting article in The Guardian on 25th April 2012 –

Britain has the third-highest proportion of teenagers who are sexually active at an early age and also ranks badly among high-income nations for harmful teenage drinking, according to a series of studies published in the Lancet medical journal on Tuesday.

The research, plus a report by Unicef, call for more attention to be paid to the changing needs of the young, warning they are at risk of mental and physical illness, vulnerable to unhealthy product marketing and that too many will die early.

Follow the link below to read more –
http://www.guardian.co.uk/society/2012/apr/25/uk-third-highest-proportion-sexually-active