Researchers have conducted a systematic study on designing retrieval pipelines for medical question answering systems that utilize large language models (LLMs) and retrieval-augmented generation (RAG)1. The study aims to address the limitations of purely parametric models, which often suffer from knowledge gaps and limited factual grounding. By integrating external knowledge retrieval into the reasoning process, RAG-based systems can provide more accurate and informative responses to medical questions. The study examines the impact of various design choices on the performance of RAG-based medical systems, including the selection of retrieval algorithms and the integration of external knowledge sources. The findings of this study can inform the development of more effective medical question answering systems, which is crucial for practitioners who rely on these systems to provide accurate and reliable information to patients and healthcare professionals. This research matters because it has the potential to improve the accuracy and reliability of medical question answering systems, ultimately leading to better patient outcomes.