1. The relationship between co'ee drinking and myocardial infarction was studied in young women, aged 30-49. This retrospective study included 487 cases hospitalized for the oocur- renoe of a myocardial infarction (MI). Nine hundred eighty controls hospitalized for some other acute condition were selected as controls. Data for consumption of ve or more cups of coffee, stratied by smoking status were: Nonsmokers Cups per day MI Controls 2 5 14 49