Readng the website of this Forum provides lots of information ... hopefully it helps 😊

thyroiduk.org

Hi Mirren may be she has conversion issues or perhaps some other underlying condition like celiac disease or adrenal insufficiency. I was hyperthyroid and had muscle weakness due to adrenal insufficiency and various food allergies. I am still not a 100% but trying to get there slowly with diet changes and proper medication. Sorry I forgot to mention I became hypo afterwards as I had a partial lobectomy to remove a nodule which was keeping me hyper. Ever since then I had problems with my iron and B12 levels you should make sure your sisters iron, b12, ferritin and vitamin D are all optimal and not just in range. Please also see that her free t3 levels are also optimal as they will help her feel a lot better specially in case she is not converting t4 to t3. Hope it helps let me know if you want to know anything else.

Here's a link by Dr Sarah Myhill who treats those with CFS/ ME and Fibromyalgia .. the majority of whom are also hypothyroid (often sub-clinical). Her recommendations aren't a bad place to start. I'd print her page off to show to your sister (and just look at her website at your leisure) and also look at websites like hypothyroidmom which can be interesting too, but probably more subjective.

drmyhill.co.uk/wiki/Thyroid...

hypothyroidmom.com/

I'm currently reading Dr. Peatfield's book, on an e-reader because it was quicker and cheaper. He's very thorough and has easy to understand explanations etc. Might be worth a buy.

Please check out Shaws' latest post on Fibromyalgia with the link to Dr Mercola's work - it's really interesting and may help your sister.