It varies a ton per person - I know that I often, for example, end up with the opposite of acid reflux (essentially my stomach is too basic). I would have similar symptoms and take an antacid and it would make it immediately WORSE.
Not sure if this is why but I am also one of those people that can eat super acidic foods all day no problem - I can drink black coffee and follow that up with a bunch of citrus and feel great.
Looking it up, citrus is alkaline-forming, not acid-forming, and things that are acidic in their initial form don't necessarily increase system acidity; they may have an alkalizing net impact. Apparently your body's response to food is the important bit.
Interesting - in the past I had read about alkaline vs acid "forming" but assumed it was sort of pseudoscience BS (maybe mainly due to people recommending expensive "alkaline" water). Not sure if Tomatoes are in the same boat as Citrus but I have dated people who could not even think about drinking coffee and tomato in the same day - acid reflux disaster.
oh wow, i'm the opposite: non diluted coffee and i burn, even got scoped and showed gastritis...i evidently am at the acidic end, or just not healed enough, in a vicious burn cycle perhaps...
The HN news hoardes will probably be here soon to chastise me for even remotely giving health advice over the internet but when I had an ulcer I found out that in Japan doctors will actually prescribe powdered Glutamine (its just an amino acid - common building block of protein - so pretty damn safe) for ulcers and many things that involve the lining of the GI tract. Apparently the walls can directly use glutamine to help repair themselves. Seems to help me a lot and I just regularly started taking small amounts of it daily since I sometimes love eating an exorbitant amount of spicy food and that can be pretty harsh on your insides.
Not sure if this is why but I am also one of those people that can eat super acidic foods all day no problem - I can drink black coffee and follow that up with a bunch of citrus and feel great.