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Acids? Like stronger acids than the stomach acid already inside of the human body? I doubt that considering stomach acid damages teeth. Nobody would have teeth left.

Large protein consumption? Like what many many people do for health reasons, keto, body builders, etc? People in prime health condition?

And what about fructose malabsorption with certain fruits and vegatables? Some people can't eat certain things otherwise it will make them sick due to this illness.

Go back to reddit with your pseudo science trolling. HN is one of the few decent spots on the internet for discussions and it certainly isn't improved by people like you.