Primate offers missing link to ancestor of the Aids virus

Genes found in Madagascan mouse lemur suggest HIV predecessor may be scores of millions of years old

Scientists debunk the myth that you lose most heat through your head

Popular beliefs – including hot heads, kids high on sugar, and eating in the evening making you fat – have been blown out of the water

Hangover cures, sugary hyperactive kids, and other popular myths

In the pursuit of scientific truth, two doctors examine the evidence behind some of our most widely held beliefs

Mbeki ignored the science on HIV

Peter Singer: Malicious or not, the former South African president's Aids policy is responsible for hundreds of thousands of deaths

Obesity: Gene discovery suggests some people are hardwired to overeat

The discovery of six genes that raise the risk of obesity highlights the role of the brain in making people more prone to excessive eating

Medical jewellery moves out of the 1970s and into the 21st century

An ex-SAS soldier has come up with a flash way to store personal medical data

The day I had my genes tested

Gene testing for possible illness is growing in popularity - but health experts are unconvinced. James Randerson tries it

Research shows HIV’s ancestor millions of years older than believed

Findings open a new avenue in the quest to understand the origins of HIV

Most slimming products are a con, claims nutrition expert

Researcher says overweight people are being ripped off by bogus health food claims

Female genital mutilation denies sexual pleasure to millions of women

Two doctors in Saudi Arabia want to change cultural attitudes to female genital mutilation by gathering evidence of its links to sexual dysfunction