Sarah Yi Xuan Tan

Sarah Yi Xuan Tan is a Postdoctoral Research Fellow at the National University of Singapore (NUS), affiliated with the Saw Swee Hock School of Public Health. She is a key member of the Physical Activity and Nutrition Determinants in Asia (PANDA) research team, focusing on innovative digital health interventions and behavioral epidemiology.

• Education: PhD in Epidemiology (NUS), BSc Hons in Food and Human Nutrition (Singapore Institute of Technology-Newcastle University).

Her research spans health behavior dynamics, wearable technology, and digital intervention strategies to optimize health outcomes. She specializes in 24-hour time-use analysis and compositional data modeling to understand how daily activities impact child development and chronic disease prevention.

Recent publications highlight her work on the MEDAL application for assessing children's movement and dietary behaviors, with a strong emphasis on technology validation, cross-sectional studies, and prospective associations between lifestyle patterns and health metrics. Her collaborations span public health genetics, environmental health, and health systems research.

Her methodological focus includes isotemporal substitution modeling, digital diagnostics, and behavioral determinants in multiethnic Asian populations.