Thyroid peroxidase antibodies are positive for autoimmune thyroid disease (Hashimoto's). There is no cure for Hashimoto's which causes 90% of hypothyroidism. Treatment is for the low thyroid levels it causes. Many people have found that 100% gluten-free diet is helpful in reducing Hashi flares, symptoms and eventually antibodies.
There is scope for a dose increase to raise FT4 and FT3 which should improve fatigue and, perhaps, weakness. Most people will feel well with TSH 1.0 or lower and FT4 and FT3 higher in range.
Read Treatment Options in thyroiduk.org.uk/tuk/about_... Email louise.roberts@thyroiduk.org.uk if you would like a copy of the Pulse article to show your GP.
I'm sorry, I assumed you were already taking Levothyroxine and needed a dose increase.
Your results are euthyroid (normal) and it is very unlikely any GP or endo will prescribe Levothyroxine. You can supplement 200mcg selenium which supports thyroid but it could be many years before you become hypothyroid.
Try 100% gluten-free diet for 3-6 months. If there is no improvement you can resume eating gluten.
Ask your GP to test vitamin D, B12 and folate. Levels drop alarmingly as we age and deficiencies can cause fatigue and weakness.
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