Longterm gerd exposes your esophagus to acidic material.
This is injurious. There are a number of potential effects including but not limited to esophagitis
, stricture, damage to your teeth, reactive airway/asthma
type symptoms, aspiration/pneumonia, "barret's esophagus", and even risk of esophageal cancer
. Some of these are "extremes", so please discuss with your family physician.