Coffee may protect against head and neck cancers
Drinking more than four cups of coffee a day decreases the risk of developing certain cancers, a study suggests
Homeopathy Awareness Week: Is this the homeopaths’ last stand?
Edzard Ernst: It's Homeopathy Awareness Week, but homeopaths may be about to face a final deadly assault
Q&A: The autism spectrum
Guardian health editor Sarah Boseley on understanding autism
The genetics of autism
Story tracker: Updates on the research published in Nature and sources of further information
Scientists have the genetic causes of autism in their sights
In the largest study ever into the genetics of autism, scientists have identified variations that are more common in children with the condition
Acupuncture’s painkilling secret revealed: it’s all in the twist action
Twist of a needle damages cells and triggers release of anti-inflammatory chemical adenosine, US scientists find
Acupuncture: unregulated therapy that took off in 70s Britain
Evidence for efficacy of 19th-century import hard to establish
Acupuncture may ease pain by triggering release of natural painkiller
Study in mice suggests acupuncture stimulates cells to release one of the body's own painkillers
Bone marrow transplants cure mental illness – in mice
Preliminary research involving bone marrow transplants in mice suggests an immune approach to treating mental illness
Gut instinct: the miracle of the parasitic hookworm
When Jasper Lawrence heard of a radical cure for his allergies, he decided to give it a go: he went to Africa and infected himself with a blood-sucking parasite. Now he's cured, and he believes hookworm can help people with asthma, diabetes and MS. Only one problem – he's on the run from the law