Mayo Clinic Minute: Get the facts on stroke

Someone in the U.S. has a stroke every 40 seconds. The good news is that strokes can be treated and prevented, and many fewer Americans die of stroke now than even 15 years ago.Today, World Stroke Day, learn the warning signs, and respond quickly if you believe someone is suffering a stroke. As Vivien Williams explains in this Mayo Clinic Minute, time is brain.

Watch: The Mayo Clinic Minute

Journalists: Broadcast-quality video pkg (0:57) is in the downloads. Read the script.