D-Care: A Multi-Tone LLM-Based Chatbot Assistant for Diabetes Patients

Diabetes is a growing chronic illness requiring complex management. Patients must frequently adjust treatments and lifestyles to prevent complications. AI, particularly Large Language Models (LLMs), can support this process through chatbots. However, few studies have assessed LLMs for diabetes patients. This study examines an LLM-based chatbot’s ability to provide understandable and useful information. D-Care, a chatbot using OpenAI’s ChatGPT-4o, was developed to generate responses in four tones, from elementary to technical. A user study with 40 participants showed that tone variations significantly impact comprehension and usability.