John, don't misunderstand me. I'm not being a smart-ass. My docs talk to me all the time about my metabolism, and you seemed to have a grip on the subject, so I asked.
The tongue sounds like it might be "scalloped tongue." Look it up. Tooth-sized indentations with intervening white spots? I had it for over six months. Bothered me a lot. Even thought I had cancer. Eventually went away. Might have been caused by my mouth being "hyperactive" in a way. When I started a diet pill--a really good one--I also started sucking my tongue up against my teeth 24 hours a day. Not saying that's what you're doing, just presenting a possibility.