Just done a search for chronic gastritis alongside hypothyroidism and came up with a post here put on by Helvella/Rod about 7 mths ago....
I assume this is what I have but have not bothered to explore it on the NHS due to the fact that they tend to dole out PPIs like sweeties for these kinds of issues, and not much else is done. I was diagnosed with gastritis/duodenitis around 10 yrs ago, and given PPIs which I took for 2 yrs and then stopped as I didn't like the idea of using them long term.
I have been hypothyroid (presumably Hashimotos though never had that checked out) for 20 years, mostly on T4 until a year ago when I was able to go T3 only via a GP and endo. That hasn't really improved my stomach problems either.... have also looked into adrenal support in the past, and tried Paul Robinson's procedure but gave up after 6 mths.
I was also diagnosed with ME/CFS some 6 yrs ago due to deteriorating energy.
It was then that I began to explore other means to fix my health problems with limited success. I am now on a Paleo type diet, gluten free, and mostly dairy free, and mostly grain free. Any additions of sugar, fruit, grains, processed food, additives etc etc, cause me bad stomach pain, and I do my best to manage this but don't always get it right.
I take a lot of different supplements (had some testing done) now - Betaine HCL, Digestive Enzymes, probiotics/kefir, B12, D3, B vits, folate, etc etc. I also see a private Dr who checks out further things, but has found recently that I have no issues at all with bacteria/fungal that he has detected (though i do have v smelly wind if I have sugar/carbs!). I am due to have an appointment with him soon and can ask further re the gastritis but not sure if this is an area of expertise for him.
Sorry for the long post, but wonder what else I can do to heal up the stomach permanently - or am I stuck with this v strict diet? It does improve but then deteriorates and I have to manage it strictly. I find the whole thing a total bore and v restrictive if I go anywhere. Also should I have any further tests (privately?) to see what the long term issues are.
Incidentally I don't see many people mentioning chronic gastritis on here, and yet this study indicates that it's quite common.