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New research reveals the age of your brain and body can appear many years older, or younger than your actual chronological age. And within your body different organs can age at different rates.
Professor Andrew Zalesky from the University of Melbourne's Department of Psychiatry and Biomedical engineering is part of a research team that has masterminded a method to measure organ age - concluding they're not necessarily in sync with the person's time on earth.
The findings have been published in the journal Nature Medicine. Professor Zalesky says this the first study to look at organ specific biological ageing - including the brain and seven body systems.
