Our body is the playground for around 100 trillion microbes, hiding in our mouth, nose, guts, skin and genitals.
Geoff Watts investigates the bacteria flourishing on our bodies.
Inhaling cyanide, formaldehyde, arsenic...
There are plenty of reasons to pack up smoking on World No Tobacco Day.
Is the increasingly networked, online world of teenagers contributing to emotional bullying and violence among teen girlfriends and boyfriends?
Claudia Hammond discusses the impact and incidence of violence in teenage relationships.
In the final episode, Michael Mosley reveals the ingenious ways in which your body defends itself against a hostile world
Discover all the essential stuff you need to know in our pregnancy guide. Find out how your unborn baby is changing from week to week with your own personalised pregnancy calendar. Take a sneak peak at how your baby is developing in our image gallery.
Find out more about some of the subjects in the recent episode.
More about the making of Inside the Human Body
© 2011
The BBC is not responsible for the content of external sites. Read more.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.