His primary area of interest is in how to build health systems that are ethically robust and inclusive of complex marginalised populations. This question has led him around the world to learn from communities struggling to attain high-quality health care in sub-Saharan Africa, Asia, and Latin America. Through his research, Abraar has worked to improve health in gang member communities; child soldier survivors; female sex trafficking victims; the abandoned elderly; and those living with HIV/AIDS.