The goal of this interventional study is to make people in a community realize negative effects of obesity on health, and how to tackle it by adopting a lifestyle modification for weight reduction. Adults aged 20 years old or more with obesity (BMI ≥ 25 kg/m2) or waist circumference ≥ 80 cm in women and ≥ 90 cm in men were recruited. All participants received an educational session of lifestyle modification for weight reduction on the first day of study. Participants were then assigned to either continuously receive education (video clips and infographics) via application LINE, or no further education. The main questions it aims to answer are:

1. Whether or not an educational session of lifestyle modification leads to weight reduction.
2. Whether or not a weight loss by a continuous education via an online application is more effective than not receiving it.

Inclusion Criteria:

• Obesity (BMI ≥ 25 kg/m2)
• Waist circumference ≥ 80 cm in women and ≥ 90 cm in men

Exclusion Criteria:

• Contraindications for bioelectrical impedance analysis
• Active cancer
• No available health data