My sister, in Houston, is a patient of Dr. Ridha Arem. I was a patient of Dr. Richard Langer in Berkeley, he's also a good thyroid doctor (and author).

Do you have pernicious anemia? If your B-12 levels are low, that is a possibility. I have it, and the only B-12 that helps is Hydroxocobalamin injections. It's a synthetic, time-release B-12 that works wonders.