People who live near major roads have higher rates of dementia, research suggests.

The NHS programme for screening those at high risk of type 2 diabetes is unlikely to have much impact, according to BMJ research.

A malaria vaccine has passed a "critical milestone" in human safety trials, say researchers

Babies should be given peanut early - some at four months old - in order to reduce the risk of allergy, according to new US guidance.

A woman is donating a kidney to a stranger to repay the NHS for saving her husband's life.