Thank you for posting your query.
I have noted your symptoms. I understand that you are suspecting thyroid disorder
) as a possible cause for your weight gain.
Regarding hypothyroidism, the typical TSH would be more than 4.5, and often in 20s or even higher. So, in your case, I agree with your doctor that they do not seem to be in the hypothyroidism range. However, I also agree that T4 is on the lower side.
I feel that you should get thyroid antibodies
done to rule out autoimmune thyroiditis
For weight loss
, you should try diet control and exercises as the first option.
I hope it helps.
Dr Sudhir Kumar MD DM (Neurology)