L.A. Times:
"Griffith Joyner was one of 25% of the population to have a congenital weakness of a blood vessel in the brain, called cavernous angioma, said Dr. Barbara Zaias, a forensic neuropathologist with the coroner's office. She said 10% to 15% of those people suffer from seizures.
In most instances, though, the condition doesn't cause problems, and many people live their lives unaware of it. Other times it may cause headaches, bleeding or seizures, Zaias said."
I think that Huwee's ad means that life is short, so use our brain imaging machines to see if the anomalous structures in your head are going to explode.