Acupuncture is on the list. I even thought about something different.
I'm pretty sure I've seen you say positive things about chiropractic before, so my guess is that that's what you have in mind. There's e.g. this from Cochrane, which is less than a ringing endorsement but can be described without actual dishonesty as "say[ing] it can produce positive medical effects".
[EDITED to add: isn't "chiropractic" a horrible word? It surely ought to be "chiropractice" or "chiropraxis" depending on how pretentiously classicist one wants to be. Perhaps it's no worse than "physic" or "arithmetic", but it always feels wrong to me.]
Another month, another rationality quotes thread. The rules are: