She is an adult nurse practitioner, completing a Master of Science in Nursing (MSN) in Adult Health Primary Care in 2003 from the University of Alabama at Birmingham (UAB). She also earned a PhD degree in Occupational Health Nursing from UAB in 2009. Dr. Grizzle was awarded a graduate fellowship from the National Institute of Occupational Safety and Health (NIOSH) from 2001 to 2009.