A big driver of mental health issues are economic pressures. When you have to work long hours for shit pay, it does a number on you. Addiction rates increase with poverty, and our current economy is stressful for all but the richest and most fortunate. Even high earners have to work themselves to the bone for their position, and their lack of work/life balance drives them to isolation.

So it all comes back to capitalism. Solving economic inequities is a prerequisite to addressing almost all of our problems.