Why do I feel dizzy when I stand up from lying down?

Many people feel dizzy when they wake up after sleeping. At this time, they need to be alert to whether it is caused by some diseases, such as common anemia, high blood lipids, and cerebral arteriosclerosis. People are prone to these symptoms.

1. Anemia

If dizziness is accompanied by fatigue and pale complexion, the possibility of anemia should be considered. Under healthy conditions, the amount and quality of hematopoietic tissue in the elderly have declined, and the aging of red blood cells themselves makes their utilization of iron much lower than before. Therefore, if the elderly do not pay attention to nutritional health, they are likely to suffer from anemia. In addition, patients with indigestion, peptic ulcer, gastrointestinal bleeding and chronic inflammatory diseases may all develop anemia.

2. High blood viscosity

Hyperlipidemia, thrombocythemia and other conditions can increase blood viscosity and slow blood flow, resulting in insufficient blood supply to the brain, and easily leading to symptoms such as fatigue, dizziness, and weakness. There are many reasons for hyperlipidemia, the most important of which is the unreasonable dietary structure. Patients eat a lot of high-fat and cholesterol foods and do not like to exercise. Currently, the incidence of this type of disease is on the rise.

3. Cerebral arteriosclerosis

The patient feels dizzy and often suffers from insomnia, tinnitus, emotional instability, forgetfulness, and numbness in the limbs. Cerebral arteriosclerosis reduces the inner diameter of cerebral blood vessels, reduces blood flow in the brain, causes insufficient blood and oxygen supply to the brain, and causes dizziness.

4. Heart disease

In the early stages of coronary heart disease, the symptoms are still mild. Some people may not experience obvious discomfort such as chest tightness, palpitations, shortness of breath, etc. They may only feel headache, dizziness, weakness in the limbs, difficulty concentrating, tinnitus, or forgetfulness. The main reason for dizziness at this time is atherosclerosis of the coronary arteries of the heart, which causes the lumen to become thinner and narrower, resulting in ischemia and hypoxia of the heart. Insufficient blood supply to the heart can cause insufficient blood supply and lead to dizziness.