Dizziness often occurs in everyday life, and many people would consider it a minor ailment. Occasional dizziness should not be a serious problem. However, if dizziness is prolonged, be careful because it may be one of the common complication symptoms of coronary heart disease patients during painful episodes. Let’s learn more about the relationship between dizziness and coronary artery disease. Note 1: When you have coronary heart disease, the typical symptoms that occur are mainly chest tightness, breath-holding, and angina. But a large proportion of people will also experience dizziness. This is because the coronary arteries supplying blood to the heart in coronary heart disease become atherosclerotic and narrowed, resulting in a reduction in blood supply to the heart, a long-term shortage of blood supply to the heart, a decrease in heart function, and a lack of power to deliver blood to the whole body. Note 2: The brain is the highest part of our body, and the brain needs a lot of fresh blood at any time, so it is most sensitive to the response of ischemia and hypoxia. Dizziness occurs when the heart is ischemic, causing a decrease in blood supply to the brain. In addition, some people will also experience tinnitus, which is caused by the reduction of blood supply to the ear, and some people will feel no strength in their legs because the blood supply to the legs has decreased. Note 3: When the temperature drops, blood vessels will contract, causing insufficient blood supply to the brain and causing dizziness. Many elderly people like to exercise in the morning, and a large part of the blood supplied by the heart is divided to the limbs during the morning exercise, and at the same time, people are generally upright, which is more likely to cause insufficient blood supply to the brain. Therefore, the elderly must pay attention to keep warm, morning exercise to moderate, once such symptoms, must promptly seek medical attention, do not simply think that the brain has any problems, to consider whether it is caused by coronary heart disease. Note four: dizziness when hungry, dizziness around the period, dizziness when standing up after squatting for a long time …… people do not care too much about these common phenomena. In fact, dizziness may also be caused by atherosclerosis of the blood vessels, so we should pay particular attention to dizziness in our daily lives, and if it occurs, seek immediate medical attention for early detection and treatment.