I feel I got to a point of being a but "stuck" over the last couple of months - with no obvious vitamin/mineral deficiencies I had got my TSH down to 2.7 over a 2 year period (started at 30) and T3/T4 all look in the right ranges. I have not checked TPO for a long time - will do so over the next few months.
So I rethought all the things that in isolation seemed to help and have come up with a plan to pull them altogether- the result is the following:
1) Morning porridge scrapped and replaced with yoghurt/fruit/honey and whenever possible celery/spinach/carrot juicer - I have finally adopted the medical medium advice from the book I read before Christmas
2) Selenium supplement scrapped and replaced with 3 organic brazil nuts each day - taking less than 3 seemed to have little to no impact. It literally takes about a week of this switch and trust me I will never be going back.
3) Restarted kelp supplement - this is the RDA only. This is absolutely not recommended for anyone with hashimotos, I simply know the benefits are so important I am managing the risks by taking sufficient selenium in the brazil nuts (plus B1) to ensure there is no damage to my thyroid.
4) Use expensive magnesium citrate supplement 500 mg per day and not cheap non branded from web-very noticeable difference imvho
5) Use maintenance level vitamin D, now my blood tests are in the middle of the range
6) Skip lunches wherever I can and tend to eat more food later in the evening - this suits my pattern. I fully accept this may the exact reverse for others.
7) Abandoned a strong B combination vitamin and only use B1 100mg -B12 is shown to be in range
All I can say is that I do not know what part of the above I can credit for the change, but it is for me an important step forward and is making a real positive improvement to my training intensities/energy levels/mood etc....