What are the common causes of insufficient cerebral blood supply?

Cerebral hypoperfusion, also known as cerebral ischemia or insufficient cerebral blood flow, refers to a condition in which the blood supply to the brain fails to meet its normal functional needs. Causes of cerebral hypoperfusion include:

1. Vascular diseases: Atherosclerosis, hypertension, hyperlipidemia, and other conditions can cause narrowing or blockage of blood vessels, thereby reducing blood flow to the brain.

2. Medical conditions: Diseases such as diabetes, hypertension, hyperlipidemia, and vascular disorders such as atherosclerosis can alter cerebral blood flow and lead to cerebral hypoperfusion.

3. Cardiac diseases: Heart conditions such as arrhythmia and myocardial infarction can impair the heart's ability to pump blood, resulting in reduced cerebral blood flow.

4. Chronic heart failure: Patients with reduced cardiac pumping function experience decreased cardiac output, which can also lead to cerebral ischemia.

5. Cervical spine problems: Misalignment of cervical joints or cervical trauma may compress or deform the vertebral arteries, thereby reducing blood flow to the brain.

6. Hemodynamic disturbances: Reduced blood pressure or decreased heart rate can impair systemic blood circulation.

7. Microthrombi: Microscopic blood clots or increased blood viscosity can slow blood flow, leading to cerebral hypoperfusion.

8. Unhealthy lifestyle factors: Smoking, alcohol consumption, lack of physical activity, poor dietary habits, obesity, irregular daily routines, prolonged sitting, and improper posture.

Mild cerebral hypoperfusion may manifest as symptoms such as dizziness, headache, and memory loss, while severe cases can lead to serious consequences such as stroke. Prompt medical attention is recommended.