Dr. Hana Hayashi is a public health strategist and behavioral scientist based in Tokyo whose mission is to create a healthier society so that people can better enjoy and maximize their lives. She has led global health promotion and consulting projects, in both developed and developing countries at McCann Health, and as Asia-Pacific Director at McCann Public Health. She actively researches and teaches at multiple academic institutions, such as Tokyo Medical and Dental University, the University of Tokyo, and the Society and Health Lab at Harvard T.H. Chan School of Public Health. She is a member of the Asia 21 Young Leaders network.