It is an illness that runs in families – but there are other factors which go beyond inheritance.
Cancer is not the modern disease many believe it to be. New fossil evidence from two South African caves suggests that its origins lie deep in prehistory.
Some think labelling it a disease is a helpful way to think about addiction; others think this makes the addict helpless in their fight against addiction. Two academics debate both sides of the coin.
What could we do if a real-life zombie disease started to spread?
They may be single-celled organisms, but as our distant cousins amoeba can tell us a lot about ourselves.
As Australia joins a New York summit to discuss the UN Sustainable Development Goals, it still faces questions over whether it is meeting water standards at home.
Recognising the symptoms of the dispossessed will prevent crimes against humanity.
Invasive species and diseases pose a major threat to agriculture – particularly in the countries that can least afford it.
It took a computer to discover the potential threat of a drug-resistant strain of swine flu that was about to spread from New South Wales. So how close did we come to a global pandemic?
Millions of people die or suffer from infectious diseases each year. Computer modelling can now help simulate the impact of any spreading disease.
The rhetoric of racial purity is full of suggestive terms like illness, weakening and dilution. These imply the medicalisation of the nation.
The world looks to the WHO for all health-related matters – but it is only part of the picture.
Bats can carry some of the deadliest diseases known to affect humans and yet they don't seem to get sick. So what can we learn from a bat's immune system?
The collapse of Syria's health system is helping spread leishmaniasis but not in the way some media outlets have reported.
The word "virus" strikes terror into the hearts of most people. But most viruses are actually vital to our very existence.
Research has shown that culling koalas could help stop the spread of deadly chlamydia. But how open will Australians be to killing one our favourite animals?
A Scottish nurse who was "cured" from Ebola is now back in serious condition after the virus appeared to have re-emerged.
What if you could take a simple test to reveal your individual risk of developing a range of cancers and hundreds of other diseases?
More than 1.5 million people die of tuberculosis across the world every year. Although testing and screening has improved and more drugs are available, it is not enough to conquer the scourge.
People living in close proximity to animals infected with Bovine TB are at a risk of contracting the disease through drinking their milk and eating their meat.