Diabetes mellitus (DM) is a metabolic disorder caused by abnormalities in carbohydrate, fat, and protein metabolism resulting from impaired insulin secretion, insulin action, or both. Elevated blood glucose levels (hyperglycemia) are the hallmark of DM. This study aimed to evaluate the effect of Arenga pinnata leaf extract on the histopathological features of the gastric mucosa in streptozotociā¦