It’s Friday night, and that means it’s time for your weekly medical check-up with the one and only Dr. Ross Walker. In this jam-packed consult, we tackle the "biochemistry of stress" and a massive study of 22 million people that proves a direct, biological link between mental health and heart attacks.

Listen to John Stanley live on air from 8pm Monday to Thursday and 7pm on Friday on 2GB Sydney and 4BC Brisbane