Biography

John S. Ji is an Associate Professor at Tsinghua University's Vanke School of Public Health. John received his B.A. in Neuroscience from Johns Hopkins University in 2008, his Sc.M. in Epidemiology, and his Sc.D. in Environmental Health from the Harvard School of Public Health in 2013. John joined Tsinghua University Vanke School of Public Health in 2021 as a tenure-track associate professor and was promoted to tenured associate professor in 2025. During his sabbatical (2025), John worked as a Senior Technical Officer at the World Health Organization (WHO) Asia-Pacific Centre for Environment and Health (ACE).
John's research uses large-scale cohort studies to identify environmental risk factors, climate health adaptation, and resilience. John’s research has been published in interdisciplinary journals, including Nature Medicine and The Lancet Planetary Health, as well as epidemiology journals, such as the International Journal of Epidemiology and Environmental Health Perspectives. He organized The Lancet Series on Climate change and health adaptation in the Western Pacific region. John is ranked in the Stanford/Elsevier Top 2% Scientists List for consecutive years.
At Tsinghua University, John teaches Planetary Health to undergraduate students and Public Health Research Methods and Cohort Studies to graduate students.
John served as an Associate Editor handling The BMJ Collection on Enhancing cohort studies in China and internationally. He was a former Senior Editor for The Lancet and is on the editorial or advisory boards of The Lancet Regional Health Western Pacific, Social Science & Medicine, and the Journals of Gerontology Series A. John is the co-chair of the WHO Technical Advisory Group for Climate Health Ethics, and the Asia Chapter Councilor for the International Society for Environmental Epidemiology (ISEE).