This study evaluated the effect of a transformative learning (TL) intervention on functional health literacy and diabetes knowledge in older African Americans. Twenty participants from senior community centers completed a six-session intervention. The short-form Test of Functional Health Literacy in Adults (s-TOFHLA), Literacy Assessment for Diabetes (LAD), and Diabetes Knowledge Test (DKT) were used to perform pre- and postmeasurements. Postintervention s-TOFHLA scores and DKT scores were significantly increased (p less than 0.5). Participants' verbal responses further affirmed the positive influence of the TL principles.(Contains 3 tables.)