Introduction
Edited by: Xiang Li, Tulane University School of Public Health and Tropical Medicine, United StatesReviewed by: Han Feng, School of Medicine, Tulane University, United States; Erica Lau, University of British Columbia, CanadaThis article was submitted to Digital Public Health, a section of the journal Frontiers in Public HealthOnline interventions have long been shown to be an effective means to promote a healthy lifestyle, thereby helping to control body weight and blood pressure figures. Likewise, using video modeling is also considered an effective way to guide patients through behavioral interventions. Nonetheless, to the best of our knowledge, this study is the first to analyze how the presence of patients' “own doctor” in the audiovisual content of a web-based lifestyle program (“