I suffer from gastro-esophageal reflux disease (GORD) which is caused by too much stomach acid.
Whilst I don’t have all the same symptoms they are closely related so I’ll share my experience, maybe there is some benefit.
I had a scope of my stomach and biopsy of done years ago. The biopsy was of small areas of tissue in my stomach to rule out the bacterial infection that causes ulcers.
I take 10mg of omeprazole daily which mostly keeps everything in check, I haven’t had to increase the dosage since I started taking it, probably close on 20 years.
In terms of training I found that some drinks just don’t agree with me, anything too concentrated gives me the runs and often anything too sweet gives me heartburn. At the moment I use SiS no problem and have used Gu and Vitargo before.
I can’t say my training has made things worse but choice of supplements definitely has.
I still ride with a bottle of water or electrolyte along side a carb drink
Diet wise I know certain things set me off, one of which is bananas, a favourite of endurance athletes everywhere. I can’t eat a banana if I’m hungry or I suffer badly.
Mints, mince and white bread are others that spring to mind. Chillis if I over do it but I still enjoy spicy food.
Needless to say after a night on beer and curry/chilli I need to increase my meds and often take an over the counter remedy.
Oh an too much yoghurt causes a lot of grumbling and resultant gas.