Katie Couric opens up about a sudden, temporary memory loss due to transient global amnesia

Katie Couric revealed she experienced several hours of memory loss during the Aspen Ideas Festival, later diagnosed as transient global amnesia. An MRI ruled out stroke, and the condition—characterized by temporary memory gaps—usually resolves within 24 hours with no lasting effects. The exact cause is unknown, though migraines, high cholesterol, and heart disease may raise risk. Couric noted the missing hours will always be a part of her memory.