This study evaluates the feasibility of ChatGPT-4 as a knowledge resource in bariatric surgery. Using a problem set of 30 questions covering key aspects of bariatric care, responses were reviewed by three bariatric surgery experts. ChatGPT-4 achieved strong performance, with 50% of responses scoring the highest possible rating for alignment with clinical guidelines. However, limitations were noted, including outdated criteria, lack of specificity, and occasional poor response structuring. The study highlights the potential of ChatGPT-4 as a supplementary tool for patient education and healthcare provider support, as well as its broader public health applications, such as obesity prevention and healthy lifestyle education. Despite its promise, challenges such as handling complex clinical cases, reliance on up-to-date evidence, and ethical concerns like privacy and misinformation must be addressed. Future research should refine the model's applications and explore its integration into clinical practice and public health strategies.