Walnuts are the healthiest of all nuts because of their high levels of antioxidants and should be eaten more as part of a healthy diet, say US scientists.

Women at high risk of developing breast cancer should be given preventative drugs, according to an international panel of cancer experts.

The Alzheimer's Society says the NHS should offer dementia checks when people reach 75, to ensure early diagnosis leads to the proper care and support.

AstraZeneca announces a deal between US and UK tax authorities that will help increase its earnings this year.

A drug containing the sleep hormone melatonin is to be tested in Scotland to find out if it helps treat dementia.

Women at increased risk of developing breast cancer should be given preventative drugs according to a panel of experts.