The influence of various risk factors on the coronary atherosclerosis was studied on 274 male patients underwent coronary angiography. The severity of coronary atherosclerosis was positively correlated with the serum total cholesterol in the relatively young patients at the age of 54 years or less. Significant coronary atherosclerosis was more frequent in non-drinkers in this age group. On the other hand, the severity of coronary atherosclerosis was neither influenced by serum total cholesterol nor by the alcohol drinking in the patients at the age of 55 years or older. The significance of serum triglyceride, apo A-I, apo A-II, apo-B as well as the history of smoking and hypertension as risk factors of coronary atherosclerosis was not obvious in any age group in the present study.
