I've been hypothyroid for years and have always taken my medication. I was on Armour. The depression and lack of energy I felt (and I didn't notice at the time, but thinning hair too---now that it's growing back, I'm noticing!) I attributed to age and other health issues. As far as I was concerned, I was doing what I was supposed to do for the thyroid. Wrong!
I went to a new doc and got new blood work. Wow! Where the normal levels for the thyroid test were .5 to 5, my test was 120. In the past six months, my thyroid medication, now Synthroid, has been increased gradually to 225 mg. a day (a lot), and I am near the norm, with a new test yesterday showing me at 11. A far cry from 120.
During this time, I have lost 50 lbs., mostly sticking to low carb and low fat. The "old-style" Atkins, that permitted foods of high calorie values as long as they were low carb, stopped working for me. (I kept trying it, though, until I was over 300 pounds.<G>)
I'm sure your milage will vary, but I've found that I really do have to keep an eye on the caloric weight of food, not just the absence or presence of carbs. Oh, I have to watch carbs too, because of diabetes, but the days of bacon and eggs every day because I'm low-carbing and trying to keep my blood sugars stable are in the past. Where they belong.
If you're hypothyroid and overweight and maybe diabetic and hypertensive, and if you aren't improving in spite of your own genuine best efforts, consider switching doctors. They do differ in skill and concern for their patients. The new doc is very careful when he says I've been "mismanaged," but he, and I, are working very hard to get me where I'm meant to be.
Part of what makes this new guy's approach so effective is that he does not assume that we will fail. Contrary, he has given me a goal weight that other people would consider overweight (200), but that I would be delighted to be, and a daily calorie intake that seems high, 2400 calories. But it works. He doesn't harangue me in any way, nor have I ever dreaded stepping on the scale. Even though he probably weighs half of what I do, I'm not embarrassed. (I've visited M.D.s and refused to be weighed, as I felt it wasn't pertinent to the visit. You should see the faces of staff when I do this!!!)
When I went there first, last June, my numbers were horrible. Yesterday, except for the still-low thyroid, every one of them was "perfect!" Shock, amazement, and delight. So many years of feeling like poop. What a waste. So please, make sure your doctor is qualified to treat your conditions, and that s/he has your best interests at heart. I always thought I'd be able to tell, but I guess not. I just know I've been very lucky to find a practitioner who's not just practicing and really knows what to do.
Thanks for listening,
Mrylln