Does Heat Therapy actually make a difference, or is it overhyped?

A systematic review and meta-analysis found heat therapy produces modest improvements in blood pressure and peripheral vascular function, and a separate meta-analysis found heat therapy may help patients with heart failure, though the evidence for the latter is not yet strong enough for firm clinical recommendations. Weighing the data: Heat Therapy looks an early-stage, lower-priority area for now — the evidence is only emerging (37/100), and its estimated impact (23/100) is on the lower end too.