Hey, really great post. This is a topic that I think a lot about. In healthcare were trying to move the system away from a purely biological approach towards what is known as the Biopsychosocial approach to healthcare. This takes the biological aspect and add a social background (i.e. socio-economic, ethnicity, level of education) and aspects of the psychological (i.e. coping strategies, personality mood). As you mention in your post biological cause of illness are not the only reason for their occurrence/exasperation.

One of the great challenges we face now is how do we build in the psychological aspect into healthcare without people thinking that positive thought alone can cure their cancer. Us humans are not the best at nuance we like things very black and white. The issue therefore is we have science showing that the mind has an effect on the body and then we have those in the complementary and alternative health community pointing to that literature and saying “see, all you need is good thoughts!”. Tough job, we’ve still a lot left to learn.

Keep up the good work, I’d suggest you take a look at Robert Sapolsky sometime here’s a video him talking about Type A and Type B personality and there link to health (note: personally is vastly more complicated but this finding is quite nice and links well with your post here. 6 mins long).