The traditional view is that the high content of egg yolk cholesterol is the culprit directly causing hypertension, atherosclerosis, coronary heart disease and stroke. 
The subjects were divided into two groups and ate egg yolk and egg white respectively. The results showed that there was no significant difference in cholesterol content between the two groups
 many middle-aged and elderly people dare not eat egg yolk. Recently, nutritionists organized a team to study the relationship between egg yolk and cholesterol, and conducted a six-month experiment on 116 men aged 50 to 65.