How old is your brain?

Science correspondent Malvindar Singh-Bains joins Kathryn to discuss whether your brain is aging faster than you. Machine-learning tools can be used in combination with MRI data to predict how well someone's brain is aging. A recent study of 45,000 different brain scans found an interesting relationship between brain age and brain disorders such as dementia and schizophrenia. Malvindar Singh-Bains is a research fellow at the University of Auckland.