Conclusions
weight loss
BLOOD, HEART, LUNG
In conclusion, this personalized, fully digital, and scalable WW program, which emphasized 4 pillars (food, activity, sleep, and mindset) and leveraged >300 ZPFs, personalized ZPF lists, and the PersonalPoints plan, resulted in statistically and clinically significant weight loss in half (78/153, 51%) of the participants. PersonalPoints and ZPFs are features designed to simplify the task of dietary self-monitoring while nudging people toward a high-quality diet. WW first offered this program to the public in November 2021. Future studies should examine how different forms of personalization in digital weight loss programs affect weight loss outcomes.This research was supported by WW International, Inc. SP has received funding from the National Heart Lung and Blood Institute (K24 HL124366).Conflicts of Interest: MIC and GDF are employees and shareholders of WW International, Inc. SP has served as a paid scientific advisor for WW International, Inc, and Fitbit and also received research funds from WW International, Inc. All other authors declare no other conflicts of interest.WeightWatchers app screenshots.In-app questions assessing food preferences and physical activity for the PersonalPoints engine.Weekly workshop topics.