What is the leading cause of a stroke?

The leading cause of a stroke is the loss of blood supply to the brain. This loss can occur due to a blockage in a blood vessel, often caused by a thrombosis or embolism, leading to an ischemic stroke. The brain relies heavily on a consistent blood supply for oxygen and nutrients; when blood flow is interrupted, brain cells begin to die, which can result in significant impairment and can be fatal.

Although high blood pressure is a major risk factor for strokes, it is the underlying condition contributing to the probability of blockages rather than the direct cause of a stroke itself. Excessive exercise or rapid heart rate can lead to complications, but they are not identified as leading causes of strokes. Understanding this aspect is crucial for identifying preventive measures and risk factors associated with stroke incidents.