Eileen Le Han is a postdoctoral fellow at the Center for Tobacco Control Research and Education at UCSF. She is interested in using tobacco industry documents and social media data to study the misleading claims about tobacco products. Recently, she is looking at misinformation about tobacco-related products and policies and the information needs of Asian American and immigrant populations in California. Her overall research aim is to reduce health disparities through improving health information literacy among priority populations.

She received her PhD in Communication from the Annenberg School for Communication, University of Pennsylvania. During and after her PhD studies, she mainly conducted qualitative research about social media, with a focus on social activism. She published a book about social media, collective memory, and activism in China, which was an expansion of her dissertation research. Since then, she has been expanding her research to look at social media in many other contexts, including health and medicine, in which she is primarily interested in the use and understanding of expertise and authority in the digital age. She also received a MS degree in Information from the University of Michigan, where she had trainings in library science.