Abstract
The maximal gastric acid secretory test was performed to examine the influence of age upon acid production in both normal and duodenal ulcer (D. U.) patients. It appeared that in the 16-40 years age group the D. U. patients showed a more than 30mEq acid output. Though a curvilinear relationship between the output and the age was not very apparent by inspection because of the wide scatter, there was an unmistakable sharp decline in the output beyond 50 years of age.
