Blackburn won a 2009 Nobel Prize for her discovery of telomeres: caps at the end of each strand of DNA that play an essential role in the ageing process. Epel is a psychologist who researches specific lifestyle habits which protect our telomeres, thus slowing down disease and lengthening life. In this compelling scientific guide, these eminent experts set out the things we can do to keep us vital and disease-free, from which foods to eat to the power of our minds over matter Caroline Sanderson SUNDAY EXPRESS