Remote Dietary Intervention
At baseline (time 1), web-based health education was offered. The risks of overweight and obesity, importance of weight management, and benefits of reasonable dietary intake were explained to the participants. The participants were recommended to prepare kitchen scales, salt control spoons, and oil control spoons or pots. During the study period, the participants were asked to upload their food logs and photos with standardized dietary plate to the app every day to track and record their food intake. The standardized meal was divided into 4 parts: cereals and potatoes (25%); fruits (25%); vegetables (35%); and livestock, poultry, and aquatic products (15%), as shown in 