Mayo Clinic Minute What you need to know about stroke

A stroke – if you think about it as interruption of blood flow to the brain, either there isn't enough blood flow getting to the brain or there's too much.

The most common type of stroke – ischemic – is when a blood vessel is blocked and not enough blood flows to the brain.

"Stroke can happen to anyone, anywhere, anytime."

Recognizing symptoms and acting FAST is key. If someone suddenly has a facial droop, arm weakness or is unable to feel one side of their body, slurred speech or trouble getting out the right words ...

"Don't hesitate. Call 911."

Dr. Kara Sands says the most important thing is ...

"stroke patients are recognized and evaluated as quickly as possible, treated as quickly as possible."

Eighty percent of strokes can be prevented with lifestyle changes. Consider the risk factors.

"Uncontrolled blood pressure, diabetes, high cholesterol, people smoking, obstructive sleep apnea."

"Strokes are preventable, treatable, and beatable as long as you think fast."