Faith Healers - Scientific Investigations

Scientific Investigations

While faith in the supernatural is not in itself usually considered to be the purview of science, claims of reproducible effects are nevertheless subject to scientific investigation.

A Cochrane review of intercessory prayer found conflicting evidence for claims of a positive effect, but there was a conclusion that "evidence presented so far is interesting enough to justify further study." A recent study not included in the review found that intercessory prayer had no effect on complication-free recovery from heart surgery, but curiously the group certain of receiving intercessory prayer experienced higher rates of complications. (See also Studies on intercessory prayer)

A group at Johns Hopkins published a study in 2011 reporting no significant effects on pain, mood, health perceptions, illness intrusiveness, or self-efficacy, but a small improvement in reported energy in a double-blind study to test the efficacy of spiritual exercise in chronically ill adults.