Dr. Armstrong's clinical and research interests include pediatric nutrition and the treatment of childhood and adolescent obesity, along with related health problems. As director of the Duke Children's Healthy Lifestyles Program, Dr. Armstrong oversees a cohort of over 3000 overweight children and teenagers. She is a member of the Executive Committee for the American Academy of Pediatrics Section on Obesity. Dr. Armstrong's research focuses on leveraging innovative strategies to improve children's nutrition and activity, including mobile health interventions, community partnerships, and medication or surgical approaches.