> So, the roots of all of these diseases could definitely be related. Well, yes, but by definition they already have one connection at the root: the immune sys

> So, the roots of all of these diseases could definitely be related. Well, yes, but by definition they already have one connection at the root: the immune system. So increased comorbidity could also be explained by having a kind of immune system that fundamentally is more likely to develop auto-immune diseases.