In 1996 or maybe earlier my doctor prescribed Levoxyl or its generic equivalent. At that time and during the intervening years I paid no attention to the diagnosis and were it not for my wife filling the prescriptions and insisting that I take the medication I would not. In fact I would quit occasionally as I do not have any of the traditional symptoms. I am 5'11" and weigh 155 lbs, I've run from 20 to 35 miles weekly, and worked modestly hard labor the majority of those years.
Recently, I read about the brain fog, concentration, and hair loss as possible symptoms so I've been educating myself about the condition. I got my bloodwork from 1996 and the TSH at that time was 8.59 and under medication I seemed to be varying to 6.01, to 4.59 and recently to 0.03. The dosages began at 25 mcg then 50 and 75, and just last summer was increased to 112 mcg. The doctor says I'm over medicated. Well I guess so but this is the first time I've seen the FT 4 result, which is 1.6ng/dl and the FT 3, which is 416 pg/dl.
One issue is I've almost never been checked more than once annually.
So, if some brain fog and hair loss are the only symptoms and I feel no different taking the medication am I hypothyroid?
Is there some other reason for the elevated TSH reading?
Have I been taking the medication only to artificially increase the T 4 and T 3 levels?