“Mental health is the state of your psychological and emotional well-being. It is a necessary resource for living a healthy life and a main factor in overall health. It does not mean the same thing as mental illness. However, poor mental health can lead to mental and physical illness.”
https://www.camh.ca/en/health-info/mental-health-101
https://www.canada.ca/en/public-health/services/about-mental-health.html