Dr. Marcus Webb is a board-certified preventive medicine physician and longevity researcher with a Master of Public Health from Johns Hopkins. He specializes in evidence-based strategies for extending healthspan—the years lived in full health—through targeted nutrition, supplementation, biomarker tracking, and lifestyle medicine. Dr. Webb has served as a medical advisor to two longevity biotech companies and has been featured in TIME, The New York Times, and peer-reviewed journals including The Lancet. He is currently leading a clinical trial on interventions that slow biological aging markers.