[Results of a comparing study concerning men under 40 years old and above 60 years, affected by myocardial infarction (author's transl)].

We examined a group of 300 men in the age of under 40 and a comparing group of 300 men in the age of 60 and more years, with clinically or histologically ascertained heart infarct (according to criterions of (WHO). Our work brought the proof that clinically unambiguous heart-infarct in the group of men under 40 years was always connected with the following main risk-factors: 1. hear-infarct of sudden death under 60 years in the family anamnesis. 2. increased hypercholesterinaemy (6.708 mol/1), hypertriglyceridenaemy (2.0g/1) and hyperuricaemy (416.5 u mol/1). 3. Increased smoking of cigarettes (a day 20 cigarettes). Time since the beginning of the attack until ringing up the physician was found out to be longer in the group of men more than 60 years old. Noteworthy is also the age-dependence of the time of out-living after myocard-infarct.