ABSTRACT
 Objective: To determine the frequency of contributing factors in Myocardial Infarction in young population
 Study design: Descriptive, Cross-sectional study
 Study was conducted over a period of six months in Medical Unit-II of Services Hospital, Lahore.
 Materials & Methods: A total population of 149 young patients irrespective of their gender with age range from 15 to 45 years and suffering from myocardial infarction were included in this study. Relevant information comprising of presence or absence of Hypertension, Diabetes, Smoking, Dyslipidemia, Obesity, Hyperuricemia, and Family history of these selected cases were recorded in the data collection proforma and patients’ confidentiality was ensured.
 Results: Out of 149 patients, 101 (67.79%) were males and 48 (32.21%) were females with male to female ratio of 2.1:1. Age range in this study was from 15 to 45 years with mean age of 34.68 ± 6.93 years. Majority of the patients; 80 (53.69%) were between 30 to 45 years of age. Hypertension was reported in 57 (38.26%), Diabetes Mellitus in 28 (18.79%), smoking in 61 (40.94%), dyslipidemia in 80 (53.69%), obesity in 20 (13.42%), hyperuricemia in 21 (14.09%) and positive family history was seen in 30 (20.13%) patients.
 Conclusion: This study concluded that Hypertension, Diabetes, Smoking and Dyslipidemia constitute the common and most important contributing factors of Myocardial Infarction(MI) in young patients aged between 15 to 45 years.
 Keywords: Myocardial Infarction, young patients, factors.