This is just my experience, I'm not advocating this for everyone. I'm a type 1 diabetic firstly which is an auto-immune condition as you know and a couple of years ago my endo found a lump on my thyroid sent me for a scan and due to the size sent me for a needle opsie thing. All good. My TSH levels were within range but I did show raised anti-bodies but he said they were "okay" (I live in SW France BTW). I have been complaining about feeling awful, tired even after 9 hours sleep, no appetite but putting on loads of kilos for a quite a while but he just looked at me with a look that said "you must be eating fish, chips and cake all day". So, I took matters in my own hands and ordered some NDT (ThyroidS) - after just a week on 1 1/2 grains I feel at least 10 years younger, I have more focus and energy and feel able to cope with the world. My appetite has returned and I pack more into the day without feeling I need a nap after climbing the stairs. WOW, just WOW!!