How we age

It is a perennial question: how do we stay our healthiest selves as we age? It's something the Christchurch Health, Ageing and Lifecourse - or CHALICE - study is looking to answer. The study's been going for 15 years with the recruitment of 400 fifty-year-olds. Its focus is on heart and brain health. Current co-director Professor John Pearson joins Anna to talk over the study's new phase, which he says will help map health trajectories into the future.