How long after giving birth should I wait before having sex again?
Medical recommendations have changed over the years, but the best advice is still not to rush
Are pubic lice in danger of extinction?
Some doctors have suggested that modern pubic-hair grooming practices, such as the Brazilian wax, are destroying the natural habitat of Pthirus pubis
Take heart, men of negligible tone and tummies as hollow as your cheeks
Stuart Jeffries: Research involving 29 Latvian women in their fertile phase has revealed what women want – and it's good news for skinny guys
Making porn actors wear condoms is not the best way to protect us
Stoya: Measure B, a law requiring the use of condoms in adult movies in LA County, fixes a problem that doesn't exist. Our sex is safe
Sex: ‘Whatever you’re doing, double it’
Jon Henley catches up with two couples who tried regimes of consecutive sex, for 101 and 365 days respectively. Five years on, are they still, um, at it?
‘Reader, I shagged him …’
Should you turn to fiction or the sex manuals for advice and ideas? John Crace does the research so you don't need to
Dr Ruth Westheimer: My family values
The sex therapist talks about her family. Interview by Nick McGrath
My mum is a sex therapist
As a boy in the 1970s, Tom Cutler liked to keep some things to himself. The question he really dreaded was this: 'What does your mother do for a living?'
Wendy Greengross obituary
Pioneering counsellor, agony aunt for the Sun and writer on sex education
My husband has not wanted sex since I became pregnant
We kiss and cuddle but haven't made love for five months – does he find me unattractive?