A new assessment of the evidence suggests putting on weight increases one's risk of the disease.
Extensive research on children is ringing alarm bells about allergies.
Americans may be rich, but they're fat, sick and dying young, according to an official report, writes Sarah Boseley.
The drive to prevent childhood obesity in the United Kingdom has not made progress.
The death toll is falling but there is still no hope for an end to the worldwide pandemic.
The prohibitive cost of cancer medicines and their lack of efficacy means early intervention is more important than ever.
A new study says televisions, computers, cellphones and console games are causing untold harm to children under three.
Teens who are regular users of cannabis are at risk of permanent damage to their intelligence, according to research covering nearly four decades.
A new report from the Institute of Mechanical Engineers suggests that technological innovation is now an integral part of sport at the highest level.
Embarrassingly, Washington's infection rate tops that of some African countries, writes Sarah Boseley.