title: Coronary heart disease and risk factors in some special type collectivities.
abstract: Transversal epidemiologic investigations carried out in different populations from several regions of Romania : Gurghiu Valley (lumberjacks from a mountain region), Danube Delta and Razelm lagoon complex (fishermen), and Bucharest have shown that, in spite of the high caloric value of food and even of a high intake of saturated fats, mean serum cholesterol is lower in the rural areas than in Bucharest, probably owing to the strenuous physical work. However, except myocardial infarction, more frequent in the urban than in the rural regions, the other forms of coronary heart disease have a relatively higher frequency in villages, particularly atrial fibrillation and ECG signs of ischemia. These findings might be explained by a greater prevalence of hypertension in these populations. It is concluded that the risk factors, which act synergically, depend on the complex structure of the "ecologic niche".
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000453:epidemiology* / Q000209:etiology; D004032:Diet; D006801:Humans; D008297:Male; D008875:Middle Aged; D009790:Occupations; D012306:Risk; D012383:Romania; D012424:Rural Population; D014505:Urban Population