This study evaluated a community-based education intervention to improve nutrition and lifestyle habits for diabetes and cardiovascular disease prevention and management in Georgia senior centers. Participants were a convenience sample that completed pre- and post-test questionnaires and the intervention (N = 693, mean age = 75, 84% female, 45% black). The 4-month intervention had 16 sessions, with eight focused on improving knowledge and behaviors that support diabetes and cardiovascular disease prevention and management, such as meeting national recommendations for physical activity and fruit and vegetable intake, and learning the symptoms of heart attack and stroke. Following the intervention, several measures improved: knowledge of the major symptoms of heart attack and stroke; daily fruit and vegetable intake; days physically active; and physical function score. These results provide an evidence base for the effectiveness of this intervention in improving diabetes and heart disease-related knowledge and behaviors among these older adults.