And after all that, they hired an utter hack to write the study report
Even many illnesses with biological origin would resolve themselves without treatment. I worked for a company back in the day that had a clinical trial (550 patients) that were first tested positive for strep throat - half were dosed with the antibiotic and half placebo. The cure rate for the drug was 70% (which met the threshold required for FDA approval which was exactly 70%) but the cure rate for placebo as I recall was 50% (all within a fairly short time frame). All patients eventually recovered, just some reached cure faster than others due to treatment.