I have been doing a Nutritional Ketosis diet for nearly 3 years now, and although initially I noticed some improvement I have plateaued and now feel like I am getting really sick again. I have Hashimoto's, but my TSH has mostly been 'in range' at around 3. I have been told by my GP that I have ME. I am begining to realise that although this kind of diet works well for a lot of people with autoimmune condition, it doesn't work so well for people with underlying thyroid problems. My TSH has only just gone up past 5, my T4 is actually in range at 17 and last time I had my T3 checked it was also in range. I get the feeling that apart from my Hashimoto's, my problem might be down to rT3 blocking my cell receptors. The NHS is never going to test for this so I am never going to be offered Thyroid hormone. Any ideas as to what else I can do? Thanks.