Anna Richardson aims to educate everyone from 8 to 80 as she takes a close look at the anatomy of sex. Includes frank discussion of sexual issues, full frontal nudity & images of genital conditions. Parental guidance may be appropriate for some viewers.

When it comes to sex, Britain is in meltdown. We've got the worst ever rate of sexually transmitted infections among young people and the highest number of teenage pregnancies in western Europe. But it's not just a youth problem - STIs have doubled in the over 45s in less than a decade.