Sky News - First for Breaking News, video, headlines, analysis and top stories from business, politics, entertainment and more in the UK and worldwide.| Sky News
A new study, carried out by teams of scientists in Cardiff and the US, is one of the largest to date.| Sky News
Experts are hoping the findings could contribute to developing new treatments for Alzheimer's disease.| Sky News
US researchers say their next step is to extend the test to a wider range of patients, including those with early Alzheimer's who do not have any cognitive symptoms.| Sky News