Google ranks healthcare websites based on several factors, including content quality, relevance, and adherence to E-A-T (Expertise, Authoritativeness, and Trustworthiness) principles. High-quality, accurate, and informative content is prioritized. Technical aspects such as mobile-friendliness, fast loading times, and secure connections also play a significant role. Google favors websites with quality backlinks from authoritative sources and considers user engagement metrics like click-through rates and bounce rates in its rankings.