There's more research about the musicians who die young.
Successful solo rock/pop stars twice as likely to die early as those in a band
Key finding - they're often solo artists. My guess is that, behind the substance abuse, mental health issues often are involved in people being kicked out of bands. Beyond that, people who prefer to work solo probably tend to isolate themselves in general, which can be unhealthy.
What do you think? I want to hear perceptions of musicians or actual insider knowledge of musicians' interpersonal behavior and mental health.