I keep seeing information that says one of the reasons cats purr is that it “helps repair damage from injuries” among other reasons they do it. If that is the case, is there any evidence that vibrating an injury in humans would cause it to heal faster? Obviously I am not talking about a gaping open wound, but say something that has scabbed over if it’s a cut. If so, is there a preferred frequency or length of time on and off that does it? Presumably a cat only purrs sporadically so it shouldn’t be constant. And would this work for more severe injuries like a broken bone that has already been set?
I’m not sure if this is just one of those dumb stories where it’s either not true, or all the purring is really doing is helping with circulation such that it’s of minimal value to the healing itself. But to hear cat people say it, purring is a “big deal”.