I'm always surprised that anyone is surprised that social deprivation causes health problems and increases health care costs. (It is the same reaction I have when someone is surprised that people with a behavioral or cognitive condition need assistance in managing their physical health conditions, but a subject for a different day.)
At this point, the data is piling up. Social inequities and the need for social supports (housing, internet access, transportation, nutrition, educational supports, and on and on) causes or is linked to many disorders. These are just a few of the recent studies released: