Mental Wellness is one of five strategic action areas for health promotion in PEI. Mental health includes our social, emotional, and psychological well-being. It is also closely linked with our physical health. Mental wellness is important at all life stages, from childhood right through to adulthood. Rates of self-reported mental health have been declining in PEI, and in Canada, for a number of years. Islanders 18 to 34 years old are less likely to rate their mental health as very good or excellent, while those aged 65 years old or more are most likely to rate their own mental health highly. Supportive physical and social environments are critical for supporting population mental wellness. These environments are largely shaped by health-promoting public policies can have a positive impact on the health of Islanders at all different levels: people, community, and society.