[esperent]

In drug trials if a person knows about the side effects of a drug (e.g. nausea, headaches) they may get them even if they were in the control group.

I'm not sure how it applies here though because alternative therapies rarely state expected negative effects.

[spacington]

If you believe in alternative/ esoterica the chance that you get sick from things just because is higher

Like 5g or Electromagnetic waves