I was diagnosed about three years ago with Hashimoto's. All my thyroid hormone levels were normal but my anti-TPO antibodies were out of range.
I had all the usual symptoms: fatigue, weight gain and then the inability to lose weight, hair loss, dry skin, you name it. I also developed severe cold urticaria: even the slightest cold breeze could cause itchy hives on my body.
The NHS endos refused to see me because my hormone levels were normal. I didn't understand why I could only talk to one when my condition worsened. After begging my GP for three years, I was able to have a 10 minute phone call with one of them. "You may or may not develop hypothyroidism" - she said. What can I do to avoid it? - I asked. - Is there anything I could do with my diet? - No. - she answered.
Then I decided to visit a private endo. Before the visit I read How Not To Die by Dr Michael Greger who advocates a whole food plant based diet to prevent and reverse certain chronic diseases and autoimmune conditions. This way of eating excludes all animal products (meat, fish, dairy, eggs), most processed food, refined flours, added sugar and processed oils. Only whole food healthy fats like avocado flesh, nuts and seeds are allowed but not their oil form (not even olive oil and coconut fat - the latter isn't recommended because it's extremely high in saturated fats, and olive oil, just like any oil damages the endothelium of the arteries. nutritionfacts.org/2017/10/...
The endo approved the diet recommended by Dr Greger, the only thing she said was that I should exclude gluten and also millet from my diet (gluten because I have non-celiac gluten sensitivity and millet because it's goitrogen even when it's cooked). She also recommended intermittent fasting (8 hours eating window, 16 hours fasting). I took 2 Brazil nuts a day for selenium intake, 150micrograms of iodine, mostly in the form of iodized salt or 2 nori sheets a day, (I know it's controversial but for me the recommended daily amount worked), 250 mg omega 3 EPA-DHA in the form of algae oil supplement (fish don't produce omega 3, they get it from algae, and algae supplements don't come with the toxins that is in fish, because they're harvested in tanks free from ocean pollutants), 1 tablespoon of ground flaxseed a day for ALA omega 3 intake, 1/2 teaspoon ground nigella seeds a day to reduce antibodies (a low sample research found that it reduced antibodies in Hashimoto's patients), 2000 UI vitamin D+K supplement and 50 microgram B12 supplement.
I followed this regime, and did regular exercise, and within two years I lost 24 kg (3.7 stones or 52 pounds), and the latest lab test last month showed that all my thyroid hormone and antibodies levels are normal. My symptoms are gone and I feel great.