What happens to brain cells during a stroke?

During a stroke, brain cells begin to die due to a lack of blood supply. The brain relies heavily on a constant flow of oxygen and nutrients provided by blood. When a stroke occurs, either through a blockage (ischemic stroke) or bleeding (hemorrhagic stroke), the affected area of the brain is deprived of this vital supply. Without these essential elements, brain cells cannot perform their functions, and this deprivation leads to cellular death.

This process happens rapidly; brain cells can start to die within minutes if blood flow is not restored. The critical nature of immediate treatment during a stroke highlights the urgency of recognizing the signs and symptoms and seeking help quickly. Understanding this mechanism is essential for recognizing the importance of timely intervention in stroke management, as restoring blood flow can prevent further damage and improve outcomes.