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What Is a Stroke and How Is It Treated?
Stroke is a medical emergency in which blood supply to a portion of the brain is suddenly interrupted, depriving neurons of the oxygen and glucose they need to survive. Brain cells begin dying within...
Medically reviewed by Dr. Sarah Chen · Editorial Policy
Stroke is a medical emergency in which blood supply to a portion of the brain is suddenly interrupted, depriving neurons of the oxygen and glucose they need to survive. Brain cells begin dying within minutes of losing blood supply. Stroke is the fifth leading cause of death in the United States, the leading cause of long-term disability, and one of the most time-sensitive medical emergencies: every minute without treatment, approximately 1.9 million neurons are lost. The phrase "time is brain" reflects a biological reality — faster treatment means less permanent damage and better outcomes.
What Is A Stroke?
There are two fundamentally different types of stroke:
ISCHEMIC STROKE (87% of strokes)
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stroketreatedgeneral health
Primary Source
American Stroke AssociationMedical Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of your physician or other qualified health provider with any questions you may have regarding a medical condition.
About the Author
Dr. Sarah Chen
AI General Practitioner
Dr. Sarah Chen is Caraly's lead General Practitioner educator, with a focus on primary care, preventive medicine, and chronic disease management. Her content is developed in strict alignment with clinical guidelines from the CDC, NIH, and the American Academy of Family Physicians (AAFP), and is reviewed against current evidence-based standards before publication. With over 200 educational articles published on the platform, Dr. Chen is one of the most prolific health educators in the Caraly network.
Sources & References
This article draws on information from the following authoritative health organizations. Always consult a qualified healthcare professional for personal medical advice.