I just recently had a Hypo thyroid diagnosis, for 3 years prior, my hair was falling and several other symptoms but upon blood tests levels appeared normal. I recently returned to the doc with severe heart palpitations, then the levels showed up as hypo, but only slightly, although I must say my symptoms are very intense and varied. Im completely exhausted a lot of the time, my mood is very low and I feel very anxious, vulnerable and emotional for the slightest reason. I dont want to start the medication until Ive tried food changes, as im told once on the meds its harder to cure naturally and the meds may not be that suitable either. Anyway Ive cut out gluten, wheat, diary and other foods that that aggravate the condition and introduced foods that help heal. Ive ordered medical mediums healing the thyroid book, which many people swear by, so hope to introduce more healthy options soon, apparently this books says thyroid can relate to Epstein Barr Virus, which relates to shingle virus, which I have had in the past and it stays dormant in your system, certain foods feed the virus etc...I also have a discolouration on thyroid area of neck! (I think its related). I watched a online talk by Dr Wentz, she specialises with Thyroid related illness, that was helpful. I want to see a Naturopath and have more tests, the dr would only do basic's, although I did push them to test me for antibodies, which came back positive. I can post test results if you can advise further. I hope sharing my experience helps others. I believe if you get negative test results and you have the symptoms or you only show up boarder line, push for more tests or get them privately if possible, because everyones levels are individual, and theres no general normal level for all, dr wentz talked about this.