ECT was certainly way over applied back in the day, but it's made a bit of a comeback in recent years for treating severe depression. In the sense that clinical trials are science, it's definitely science. It's true we don't really understand why it works, but you could say the same thing about a number of drugs for treating psychiatric disease, and I doubt you would say those are not science. Here is a FAQ about ECT from Hopkins: https://www.hopkinsmedicine.org/psychiatry/specialty_areas/b...
