I'm so sorry to you and AndyPants that you have doctors who say that since you're in the "normal" range then it has to be something else. I had a complete thyroidectomy (Graves Disease) and my doctor has worked tremendously hard and figured out that I operate best in a very very narrow range within the "normal." That being said, it took going through several docs before I found this one who is truly a gift from heaven as far as I'm concerned. The key is that she really truly listens to me and if I tell her I feel like crap or feel spazzy or can't focus she's willing to try different things with my meds. We've also found that I need more in the winter then in the summer - perhaps a Vit D and sunlight correlation? Possibly but it doesn't have research behind it so it's just our best hypothesis.
I realize that doesn't get you any answer on your weight question but I do know how incredibly, hair-pulling frustrating it can be when a doctor simply won't listen and just tells you to eat right and exercise. Not sure if it helps, but I've found that a combination of Synthroid and two Cytomel pills (one in the morning and one in the afternoon) has been the "magic" dose as far as I'm concerned. My doctor mentioned that there are some preliminary studies that Cytomel added in with Synthroid works wonders for some people. Even though my numbers were "normal" when I started it, they are still normal but I dropped 10lbs like it was nothing - getting back down to what is my "normal" weight - once the Cytomel was added in.
http://smallfoodbiz.com </blatent self-marketing>