Chatbot Helps People Move More and Eat Better in Hong Kong Clinics

In a new study, researchers tested whether a computer‑driven chatbot could guide adults toward healthier habits in everyday health clinics. The trial took place at three community hospitals in Hong Kong and involved 627 people between the ages of 45 and 75. Many participants had high blood pressure or diabetes, conditions that are growing worldwide. Half of the volunteers received a 12‑week program delivered by an automated chatbot that used motivational interviewing techniques. The other half continued with the usual care they already received. After 12 weeks, those who used the chatbot were more active, ate slightly more fruits and vegetables, and felt more committed to making changes. The differences were bigger for those who used the chatbot regularly, suggesting that the more you engage, the better the results.A closer look at subgroups revealed extra benefits. People who started with low activity levels improved the most, gaining over 500 minutes of moderate exercise each week. Those with high blood pressure also saw a modest drop in systolic readings, about five millimeters of mercury. Importantly, the positive changes were still visible nine months later, showing lasting impact. The researchers found no serious side effects. Because the chatbot can run without extra staff, it offers a practical way to support people with non‑communicable diseases in settings that lack resources for extensive counseling. The trial was registered on ClinicalTrials. gov (NCT05949320) in June 2023.