What are 80% of strokes caused by

So, roughly 80% of strokes happen because blood flow to the brain gets blocked—that's an ischemic stroke. A clot or fatty gunk (plaque) narrows or shuts down an artery feeding the brain. Getting your head around what's actually going on here? That's the real trick for stopping it before it happens.

What is the main cause of ischemic strokes?

The big culprit is atherosclerosis. Arteries get hard and narrow from all that plaque buildup—cholesterol, fat, calcium, just stuff piling up. When a chunk breaks loose or a clot forms right on top, it can sail up to the brain and plug things up. There are other ways this goes down too:

• Embolism: A clot forms somewhere else—usually the heart—and rides the bloodstream to the brain.
• Thrombosis: A clot just decides to set up shop directly in a brain artery, often where plaque already lives.
• Small vessel disease: Tiny arteries deep in the brain get wrecked, mostly from high blood pressure or diabetes messing with them.

What are the most common risk factors for the 80% of strokes?

Some risk factors you can actually do something about—they'll jack up your odds big time. Here's a quick look at the main ones:

How can you prevent the 80% of strokes caused by blockages?

Prevention? It's really about keeping all that stuff that makes clots in check. A simple list can keep you honest:

• Check your blood pressure at least twice a year; keep it below 120/80.
• Control cholesterol through diet and medication if needed.
• Manage diabetes with regular glucose monitoring.
• Quit smoking and avoid secondhand smoke.
• Exercise for at least 30 minutes most days.
• Eat a heart-healthy diet rich in fruits, vegetables, and whole grains.
• Limit alcohol to moderate levels (1 drink/day for women, 2 for men).
• Treat atrial fibrillation with prescribed medications.

"The most powerful weapon against stroke is not a drug or a surgery. It is education and prevention. Knowing your numbers and taking action can reduce your risk by up to 80%." — Dr. Sarah Johnson, Stroke Specialist

What are the warning signs of an ischemic stroke?

Catch the symptoms early and you might save some brain cells. Think FAST:

• Face drooping: One side of the face may droop or feel numb.
• Arm weakness: One arm may drift downward when both are raised.
• Speech difficulty: Speech may be slurred or hard to understand.
• Time to call emergency services: If any symptom is present, call 911 immediately.

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