This claim is made by the site Head to Health, which is a mental health and care website created by the Australian government for aged care. I believe this claim to be true, and a quote from the cite says, "Research shows that participating or viewing artistic activities can enhance your mental health and provide personal meaning." While the website doesn't reference a specific cite where the research can be found, there has been lots of outside research done on this topic, which is what leads me to believe it's true. Also, the cite itself is posted by a government organization which helps its credibility.