Among other things, you can find out how to protect yourself from disease while travelling around the world. The British Medical Journal was never loved for its funky design or prose style, and the electronic version is no different. HealthCentral This is another US-based site, so be careful with drug names. There's a lot of detail, focusing on health news, medical advice and tools which let you create your own health profile. The excellent meta-search engine is just one way of tracking down relevant information.
Extensive links complete the package.
A great site. HealthNet Good-quality portal for information on giving up smoking, stress, fitness and nutrition. Navigation is counter-intuitive, though. An impressive general resource focusing on news and advice for those in the London area. Noteworthy sections on minorities and complementary medicines.