After congress raise the tariffs on sugar to protect half a dozen sugar cane farmers in south Florida, soda manufacturers switched to HFCS as a sweetener as did bakers and ice cream makers. When sugar was the sweetener of choice, I was always the fattest kid in class. It wasn't long after HFCS replaced sugar in everything that my girth wasn't too far out of the "normal" range.
<rant>
When I was a kid, I was always the fattest kid in class, thyroid issues, diagnosed by an oxygen uptake test. Given thyroid supplement, I slimmed down to merely heavy.
Then we moved, the new doctor wouldn't give me thyroid because my PBI was fine. I bloated back up in a matter of months. I waddled into his office and said "Thyroid please?" "No, your tests are fine."
Then we moved, the new doctor wouldn't give me thyroid because my T-3 was fine. Still fattest kid in the class, though.
Then we moved, the new doctor wouldn't give me thyroid because my T-3RU was fine. Still fattest kid in the class, though.
Then we moved, the new doctor wouldn't give me thyroid because my T-4 was fine. Still fattest kid in the class, though.
Then we moved, the new doctor wouldn't give me thyroid because my TSH was fine. Still fattest kid in the class, though.
Mercifully, I got thyroid cancer, and my thyroid was removed. Now they had to give me levothyroxine. The 30 lbs I lost due to the cancer are still gone. Haven't yet succeeded in beating the only doctor in 50 years who will give me any to increase the dose a little. It seems my TSH says I'm fine. It's more important to treat the lab results than the patient...
</rant>
levo is only t4 where you need to be on all T’s (T1, 2, 3 & 4) and calcitonin which are all in dessicated thyroid (WP, naturethroid, etc). Your doc is clueless. go find one that knows how to treat you