Gastric Acidity The pH of an empty stomach in healthy individuals ranges from 1.5 to 3.5 [1]. During and after a meal, the stomach pH rises and returns to basic levels in about three hours [2]. The greatest increase of gastric pH (up to ~5) has been observed after fatty meals [3]. Achlorhydria and Hypochlorhydria Achlorhydria … Continue reading Gastric (Stomach) Acid Secretion