Environmental Factors in Coronary Heart Disease

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Abstract
Various factors relating to coronary heart disease were investigated in 2 groups of patients: 553 patients with clinical coronary heart disease and 1,056 persons selected in a field survey of the general population. The incidence of coronary disease was high in the urban population, in the upper socioeconomic classes, and in persons with highest amounts of total dietary fat and highest percentage of calories from dietary fat. Total serum cholesterol, serum phospholipid, and cholesterol/phospholipid ratio were higher in the coronary group. Finally, it seemed that physical activity was less and emotional stress and strain greater in the patients with coronary disease. No relation between coronary disease and smoking or alcohol was established.

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