'normal' is not a diagnosis, it is an opinion. And doctors' opinions on the subject are often wrong. Do you have the exact numbers for your TSH and FT4?
Did your doctor tell you you had autoimmune thyroiditis? Your high antibodies say so. So, it wouldn't be surprising if your TSH and FT4 were very abnormal indeed! What is the doctor doing about your terrible vit D?
Your TSH and Frees are not in the least bit 'normal'. The TSH isn't even in range! And your low FT3 will be causing your symptoms. Your doctor is a nitwit who knows nothing about thyroid. You really do need to be on thyroid hormone replacement of some kind. The one your doctor should be prescribing is levothyroxine. I think you should ask for a second opinion.
Autoimmune thyroiditis - aka Hashi's - cannot be cured. You doctor obviously doesn't even know what it is. With Hashi's, your immune system slowly destroys your thyroid, leaving you progressively hypo.
There is not cure for Hashi's, but as your thyroid makes less and less hormone, thyroid hormone replacement should be given. You, yourself, could try and reduce your antibodies by going 100% gluten-free, and taking selenium. If you continue to read on here, you will realise that it is the most frequent form of hypothyroidism. But, you really do need to see another doctor.
Your high antibodies and scan confirm Hashimoto's also called autoimmune thyroid disease
Your low vitamin levels can mask exactly how hypothyroid you actually are, so it's important to get vitamins levels optimal
Hashimoto's affects the gut and leads to low stomach acid and then low vitamin levels
Low vitamin levels affect Thyroid hormone working
Poor gut function can lead leaky gut (literally holes in gut wall) this can cause food intolerances. Most common by far is gluten
According to Izabella Wentz the Thyroid Pharmacist approx 5% with Hashimoto's are coeliac, but over 80% find gluten free diet helps significantly. Either due to direct gluten intolerance (no test available) or due to leaky gut and gluten causing molecular mimicry (see Amy Myers link)
But don't be surprised that GP or endo never mention gut, gluten or low vitamins. Hashimoto's is very poorly understood
Changing to a strictly gluten free diet may help reduce symptoms, help gut heal and slowly lower TPO antibodies
Combined with high antibodies you should be started on 50mcg Levothyroxine
You need to see a different GP or possibly an endocrinologist if different GP still reluctant
All thyroid tests should be done as early as possible in morning and fasting. This gives highest TSH and most consistent results
B12, folate and ferritin are all too low as well
B12 is low enough in combination with low folate to ask GP to test for Pernicious Anaemia before starting B12 injections
Folic acid supplements should not be started until after first injection for B12
Ferritin. I am not very good with iron panel results. I think the low MCV confirms you are Anaemic. You should be having ferrous fumerate supplements 2 or 3 per day. Possibly ask for referral to haematology for iron infusion
Ask different GP to correct all this and to test for coeliac disease
Before trying strictly gluten free diet very likely to help or be essential
Detailed supplements advice from SeasideSusie for Low vitamins due to under medication
A maintenance dose of 800iu vitamin D is highly unlikely to be enough.
Most with Hashimoto's find vitamin d mouth spray works best as avoids poor gut function. Better You do various strengths. Try as maintenance 1000iu or 2000iu
Retesting twice year via vitamindtest.org.uk
Aim to get level to 100nmol and keep it around there
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