The study, led by scientists from University College London (UCL), involved monitoring the strength of the pulse travelling towards the brain. Researchers said that healthy, elastic vessels near the heart usually cushion each heartbeat, diminishing its energy and therefore preventing it from reaching delicate blood vessels elsewhere… A simple, five-minute neck scan could predict the potential onset of dementia 10 years before symptoms appear, research has found. Experts hope it could become part of routine screening for those in middle-age at risk of developing the disease. As the heart beats, the physical pulse it generates reaches different parts of the body at different levels of intensity. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.