People often talk about feeling their age, but how old you say you feel is strongly linked to your life expectancy. A new study at UCL in London has shown that people who feel their age, or feel even older than their real chronological are almost 40% more likely to die than someone of the same age who - in their head at least - feels younger, as Andrew Steptoe explains to Chris Smith... Like this podcast? Please help us by supporting the Naked Scientists