Patients with thick blood may cause narrowing of the vascular lumen, which may lead to a series of symptoms and damage to important organs of the body, such as intracranial artery stenosis, coronary atherosclerosis of the heart, and atherosclerosis of the intestinal arteries, as follows: 1. intracranial artery stenosis: intracranial artery stenosis may cause dizziness, headache, unilateral limb weakness, vomiting and other symptoms. 2. coronary atherosclerosis of the heart Atherosclerosis of the coronary arteries of the heart can be manifested as angina pectoris, myocardial infarction, heart failure, or even sudden death. 3. Atherosclerosis of the arteries of the intestines: Atherosclerosis of the arteries of the intestines, or even occlusion, can be manifested as abdominal pain and bloody stools. 4. Stenosis and occlusion of the arteries of the lower limbs: Stenosis and occlusion of the arteries of the lower limbs can be manifested as numbness, coldness, intermittent claudication, or even gangrene of the lower limbs. Therefore, patients with thick blood should adjust their diet, adopt a low-fat diet, and eat as little or no animal offal as possible. If the blood lipid check reaches a certain level, lipid-lowering drugs should be taken for treatment in time.