Her research focuses on substance use disorders, addictive behaviors, and their comorbid mental health conditions. She is particularly interested in the impact of social determinants of health and the role of health disparities in preventing, treating, and managing these conditions. Dr. Mumba is passionate about improving the human condition through evidence-based initiatives and interventions, and is a strong advocate for increasing research productivity, infrastructure, and human capital globally. She is personally involved in many initiatives that improve health care outcomes and promote holistic wellness and quality of life among individuals and communities, worldwide.