Colored 3D angiogram of the brain . 85% of strokes are ischemic strokes (ischemia = lack of blood flow), caused by a clot blocking one of the very vessels we see here. Millions of neurons die with each minute - we thus reference strokes with the term "time is brain" ⏳⌛️. Early detection of strokes saves both lives and neurons, lessening the potential permanent deficits. . We can use the acronym "FAST" to help detect strokes in our loved ones and know when to call for help. Straight from the American Stroke Association: F) Face drooping. Does one side of the face droop or is it numb? Ask the person to smile. Is the smile uneven or lopsided? A) Arm weakness. Is one arm weak or numb? Ask the person to raise both arms. Does one arm drift downward? S) Speech. Is speech slurred? Ask the person to repeat a simple sentence, like "the sky is blue". Is the person able to correctly repeat the words? T) Time to call 9-1-1. If the person shows any of these signs, even if they go away, call 9-1-1 and say "I think this person is having a stroke" to get them to the hospital right away. Don't delay, and also note when the symptoms first appeared. Emergency responders will want to know! 🏥🏪 . Using these signs can literally save lives. Remember, when it comes to a stroke, time is brain ⏳⌛️