- 40% of sexually active 13-14 year olds were drunk or stoned when they first had sex.
- In a recent survey by the charity, Parentline Plus, 20% of men and 13% of women aged 15-19 said alcohol was the main reason they'd had sex for the first time.
- Around 36 per cent of teenagers in Britain have tried illegal drugs like cannabis or ecstasy.
- NHS statistics show that one-fifth of secondary school pupils admit to regular drinking.
- Every day 15 children under the age of 16 are admitted to A&E because of alcohol abuse.
- 11-13 year-olds who drink regularly have more than 10 units of alcohol a week, compared to six in 2001.
- Older teenagers who drink regularly have an average of 11.4 units a week, that's about five and a half-pints. Half of those are binge drinking at least two days a week.
Read on for tips and hints on how to talk to your teens about drinking, drugs and underage sex.
Worried about your teen? Here's how to talk to them and find out useful teen helplines you can call.