I don't understand your objection. Of course it has to be a permanent lifestyle change. It's like if I give myself a headache by hitting myself in the head with a hammer, and then I stop doing that of course the headache will go away. But if I start hitting myself again the headache will return.
My objection is that you are not reversing anything, you are treating it.
Do you "cure/reverse" bradycardia and heart block by getting a pace maker? no you treat it.
By your definition you cure/reverse any condition by taking a medicine/getting a treatment for the rest of your life.
Also...Clinically, most people who can treat type 2 diabetes with diet when they are younger, still have to go on some sort of medication (metformin) when they get older, even if their diet stays clean.
