Have gerd. So if this is what not to eat (spicy, greasy, caffeine, chocolate), what's left!?

Care about GERD. That's why there's acid blockers! But if not controlled exposure of stomach contents to your esophagus can lead to progressive erosions, ulcers, strictures (that get narrower as the scar tissue involved contracts) that trap food, barrett's esophagus (intestinalized tissue), & ultimately esophageal adenocarcinoma. Also may see laryngitis, airway irritability, asthma, chronic sinusitis, ear clicking.