Make STD testing mandatory

Rosa Freedman: Legal and financial disincentives stop people getting checked. Compulsory testing would halt the spread of chlamydia and HIV

Salinger, sex and scruples

Theo Hobson: Salinger's cult novel isn't really about rebellion against adults, but rebellion against the spirit of our age

Are you addicted to sex?

For celebrities such as Tiger Woods, checking into a sex addiction clinic seems to be the norm these days when you have been accused of infidelity. But is it a real medical condition – or simply a convenient excuse?

The real G-spot myth

Yvonne Roberts: Scientific debates over whether the G-spot exists ignore the complex reality of women's sex lives

End the gay blood ban

Peter Tatchell: Any man who has had sex with a man, even once, even 50 years ago, and even if they test HIV-negative, cannot give blood

Viagra: The profitable pill

Since its launch in 1998, Pfizer's treatment for erectile dysfunction has earned the company more than £1bn a year