How long a 55-year-old patient can live with atherosclerosis depends on the location and extent of the lesion, the speed of development of blood vessel stenosis, the damage to the affected organs, and the presence or absence of complications. If the disease is well controlled, many patients can survive healthily for a long time. If the heart, brain, kidneys and other important organs are involved, the prognosis is poor, and there is even a risk of sudden death. Atherosclerosis, i.e., atherosclerosis at the age of 55, will not affect life expectancy to a large extent if the condition is detected early and handled positively; if it involves important parts of vital organs and the degree of atherosclerosis is heavier and develops faster, the prognosis is unfavorable. When atherosclerosis involves aorta, aortic aneurysm can occur; when it involves coronary arteries and causes coronary atherosclerosis, angina pectoris, myocardial infarction, heart failure, sudden cardiac death, etc.; atherosclerosis of carotid arteries and cerebral arteries can lead to insufficient cerebrovascular blood supply and cerebral atrophy. Atherosclerosis of renal artery can cause renal atrophy and persistent hypertension. Mesenteric artery atherosclerosis can cause intestinal paralysis and intestinal infarction in severe cases, and its mortality rate is very high. Atherosclerosis of the limbs can cause muscle atrophy and weakness of the limbs, and in severe cases, it can cause gangrene. Therefore, once atherosclerosis is diagnosed, it is necessary to actively cooperate with doctors for treatment in order to prevent the occurrence of serious complications and improve the prognosis.