Casey Means, MD, is a Stanford University School of Medicine-trained physician, entrepreneur, #1 New York Times bestselling author, and advocate for metabolic health and preventive medicine.[1][2] Born around 1988, she graduated with honors and pursued postgraduate biomedical research at institutions including the National Institutes of Health (NIH), New York University (NYU), Oregon Health & Science University (OHSU), and Stanford, publishing peer-reviewed papers in journals such as *Stem Cells*, *Head & Neck*, *Developmental Cell*, *Metabolism*, and *The Laryngoscope*.[1] Means began a four-year residency in otolaryngology–head and neck surgery at OHSU but resigned in late 2018, criticizing the U.S. healthcare system's focus on "sick care" rather than root-cause prevention of chronic diseases.[1][2] Licensed in Oregon in 2018 (now inactive), she opened a private functional medicine practice, Means Health, in early 2019.[1] As a venture-backed entrepreneur, she co-founded Levels, a metabolic health company studying glucose patterns in non-diabetics to combat preventable disease; she served as its Chief Medical Officer until late 2023.[1][3] Her book *Good Energy*, co-authored and released in 2024, became a #1 New York Times bestseller with over 1 million copies sold, promoting systems-thinking approaches to health via lifestyle and metabolic optimization.[1][2] Means has built a large following as a wellness influencer, emphasizing food, environmental, and policy reforms to address chronic illness epidemics.[2] In a major recent development, President Donald J. Trump nominated her as U.S. Surgeon General, aligning with his "Make America Healthy Again" (MAHA) initiative alongside Health Secretary Robert F. Kennedy Jr.[2] If confirmed, she would serve as the nation's top public health spokesperson. Means has faced criticism for vaccine skepticism, including claims about childhood vaccine schedules contributing to health declines in children.[2] (Word count: 298)