My grandma on my father's side, my grandma on my mother's side and my dad himself all have thyroid diseases. My dad's mom had to have her thyroid gland removed twice after it had grown back after the first surgery, cause back then meds weren't available (her first surgery was when she was 14, so it must have been in the 20's). My dad had his thyroid gland removed as well and I, who still has a thyroid gland, am taking higher meds than him, who doesn't have one anymore. I could check my meds and his meds to see if they have anythign in common. I know that he is taking different ones, his are only taken after a thyroid surgery, mine are to replace the hormones. Then again my aunt who also had hers removed takes the same meds as me, but an even higher dose.
My doc explained to me that when your thyroid gland isn't working anymore it can still enlarge, very very slow, but it can happen.
Plus weight gain aren't the only symptoms, one big symptom is that you can not concentrate anymore and can hardly sleep at all. Your heart rate also slows down.
But yeah, what I actually meant in my first post was that I can't believe someone is allergic to thyroid meds, or at least to all of them.
I could be totally wrong, but this sounds a little like a bad excuse for not being able to lose weight.
I had gained almost 150lbs when my thyroid gland stopped working and lost it all after I started therapy and changed my diet.
Yes, the metabolism is extremely slow and it is very hard to lose weight with a thyroid disease, but it's not impossible.
That sounds reasonable. He says he's allergic to all the thyroid medications out there. They won't all be identical.
But maybe there is some element common to such meds as a group to which he's allergic.
I'm only stating this as a possibility.
You seemed to be stating earlier that an allergy to thyroid meds was implausible.
Now, that, I can't agree with.
Perhaps he should try this.
He hasn't given enough details to know what he's done.
Low thyroid would be something you would expect a clinic to check if someone was having unexplained weight gain.
So it is a bit odd.
Of course, we don't know how much time elapsed between his being checked by the clinic and his independent discovery of his thyroid condition.
(And apart from that, clinics can screw up. Labs do all the time.)
I imagine it would be thyroid hypertrophy.