I recently heard Professor Luigi Ferrucci, an expert on ageing, speak at my local university's medical school. One line really stuck with me: "The next great step in ageing science will be understanding how lifestyle factors slow down ageing." That, to me, is the ultimate goal. If we can slow the ageing process, we could delay or shorten the time we spend living with age-related illnesses. In other words, we might stay healthy for longer and only experience those diseases in the last few years