What causes strokes?

Cause of strokes: Strokes are caused by insufficient blood and oxygen flow to the brain. The common types of stroke are ischemic stroke (when blood flow is impeded) and hemorrhagic stroke (when a broken blood vessel leaks blood into the brain). Most strokes are related to high blood pressure, smoking, diabetes mellitus, high blood cholesterol and atrial fibrillation.

See below: Any type of disorder which can narrow blood vessel caliber or cause rupture of the vessel: aneurysms, traumatic arterial dissection, hypertension, smoking, high triglycerides, hyper-homocysteinemia, diabetes, arteritis, vasculitis, temporal arteritis, head injury, carotid stenosis, embolism from heart or other distal sources, coagulopathies, anti-phospholipid antibody syndrome, sickle cell anemia,