An adult human needs about 1000 mg of cholesterol per day, the liver makes 700 mg of it, and the rest can be provided by eating one egg per day. This risk doubles with the presence of smoking, obesity, stress, anxiety and other factors Other<br />Smoking is a social habit that is linked to a variety of dangerous diseases such as Atherosclerosis, cardiovascular diseases and various pathological mechanisms in the patient’s body Such as injuring and destroying the lining of blood vessels, as it helps to accumulate cholesterol on the artery wall Coronary artery disease, which leads to a heart attack Peroxide lipid contributes.<br />In the development of atherosclerosis and heart disease due to smoking .The HDL level decreased and the LDL level increased in smokers compared to non-smokers Thus, smoking has affected atherosclerosis through blood lipid levels .<br />The results of many researchers showed that smoking more than 14 cigarettes a day poses a major risk of diseases Coronary arteries . . High levels of HDL protect against coronary heart disease To the fact that excess, untapped cholesterol can be harmful, but it is scavenged from tissues by HDL pathway and prevents its deposition [9]. Studies have shown that high HDL in plasma delays the development of HDL.<br />Atherosclerotic disease The effect of smoking on the percentage of fats and the volume of compressed blood cells in the blood cattle<br /> It has been proven from previous studies that acrolein and hydrogen peroxide are oxidizing substances<br />Effectiveness found in cigarette smoke that causes programmed cell death and necrosis, as well as causing damage In the alveolar epithelial cells lining the walls of blood vessels [11, 12,] which leads to the formation of The coagulation process begins almost immediately after it damages the endothelium layer (membrane).<br />The lining of the vessel wall). With the exposure of the blood to some proteins, such as tissue factor, . occurs Some changes in platelets and one of the plasma proteins, which is "fibrinogen", which represents one of the coagulation factors, then immediately the platelets act to form a platelet plug <br /><br /><br />MSc Zainab Mohsen Najim