The year 2007 contained plenty of eye-opening news about sex, with juicy, never-before looked-at details about who is doing it and why.

It also contained some rather frightening news about sex trends, pills and vaccines. And then there were a few of those "Did someone actually spend money to fund that study?!" kind of studies.

There were lots more stories in the world of sexual health and not-so-healthy sex than this list could fit, but here's a compendium of our favourites.

The 'Who knew?' file
Oral sex linked to throat cancer
Seniors having more sex than you may think

The 'Duh! That's pretty obvious!' file
Both genders agree: lust is top motivator for sex
Men more likely to click on online sex content

The 'That's a bit scary' file
Teen sex - pregnancy rates down but STIs rising
Herbal sex pills pose hidden dangers