Serum Pepsin and Tubeless Gastric Analysis as Predictors of Stomach Cancer

Abstract
From 1959 to 1962, 6859 Japanese clinic subjects had assays of serum peptic activity (referred to as "pepsin" in this study). By 1969 the incidence of stomach cancer was three times higher among men whose pepsin levels had been below 200 μg per milliliter (tyrosine equivalents). A similar trend was not as clear among the women with low pepsins.