The aim of the present study was to evaluate trends in hospitalization, risk factors and smoking habit for younger patients with acute myocardial infarction (AMI) over 6 years. The data of all patients with AMI at the Department of Internal Medicine from 1997-2002 were analyzed with accent on. younger population (<45 year). The group was composed of 967 AMI with similar frequency every year. Mortality rate was 16.2% in 1997 and 6.7% in 2002. Mortality was lower in smokers (3.1%) than non-smokers (12.2%). In this period 62 (6.4%) AMI patients were in younger age group. In 1997 admitted were 8.8% "young" AMI (76.9% males-m), 1998-5.9% (85.7% in), 1999-5.4% (71.4% in), 2000-5.9% (81.8% in), 2001-4.1% (75% in), 2002-8.2% (93.8% in). The first risk factor were smoking (77.4%) and dyslipidaemia (50%). less frequent were hypertension (20.9%) and diabetes (19.4%). At younger population AMI is increased, specially in males with growing proportion of smoking and dyslipidaemia.