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ZhongdaChat-ED: a medical large language model for personalized erectile dysfunction health consultation and professional clinical decision-making using retrieval-augmented generation

Asian Journal of AndrologyResearch Authors: Yi Xia , Yong-Kun Zhu, Chun-Hui Liu, Xiang Hong, Rui-Xin Zhang, Nie-Ke Zhang, Ming Chen, Guang-Yuan Zhang, Chao SunAIIM Authors: Junhyeok Hong, Madison SchanzApproved by President Reda RiffiPublication Date: 12/12/2025

Comprehensive Summary

Xia et al. introduced ZhongdaChat-ED, a medical large language model (LLM) specifically designed for erectile dysfunction (ED) counseling and clinical decision support. Unlike general LLMs, ZhongdaChat-ED integrated a retrieval-augmented generation system, allowing for the AI to access today’s information from domain-specific databases. This allows for all the generated responses to be based on current clinical data. They developed a consumer version and a professional version, one for patient health consultation and clinician decision support, respectively. They compared the model with popular AI models, such as ChatGPT and Gemini, by asking them simulated ED consultation questions and clinical case questions. Three urologists and three patients scored the responses based on accuracy, empathy, clarity, and clinical significance. The consumer version provided higher accuracy, empathy, and clarity than the comparison models, while the professional version showed higher clinical case analysis scores. Overall, ZhongdaChat-ED demonstrated more consistent outputs than general LLMs, particularly in the context of medically complex scenarios.

Outcomes and Implications

The study showed that medically specialized language models are capable of addressing limitations seen in general AI tools, such as outdated information and inconsistent accuracy. By basing its responses on up-to-date guidelines and clinical data, ZhongdaChat-ED is able to provide safer and more reliable support for both patients and clinicians. Also, by designing the AI into two versions, they showed how AI can be easily tailored for different users. With further testing and cross-disciplinary data integration, medically specialized LLMs have the potential for widespread clinical use with higher accuracy and better patient outcomes.

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