Fruits and vegetables: Fruits that are rich in antioxidants, such as blueberries, cherries, and apricots, can help reduce symptoms of indigestion. (nutritionfacts.org)
I read just the other day, maybe I can find the site and link it for you, that indigestion due to LACK of stomach acid can phenom / present as symptoms of indigestion from LACK thereof, and suggested this is very often misdiagnosed. (nutritionfacts.org)
Many old stars, they say, show symptoms of indigestion from having gobbled up planets: bloating, unusually large infrared luminosity, and excess lithium. (sciencemag.org)