How we think and what we believe can lead us down very different roads. Our state of mind is a very powerful phenomenon.
Case in point, we all know what the Placebo Effect is - where health benefits can be produced by a "non-real" treatment.
But did you know there is a Nocebo Effect - where something that is ineffective causes ill health?
While the Placebo Effect refers to health benefits produced by a treatment that should have no effect, patients experiencing the Nocebo Effect experience the opposite. They presume the worst, health-wise, and that's just what they get.
Not much is known about how the Nocebo Effect occurs, but theories of origin include biological
and psychological factors.