Casey Means

Casey Means is an American physician, entrepreneur, and author best known for her work in metabolic health and preventive medicine. A Stanford-trained doctor, she co-founded the health technology company Levels and was appointed U.S. Surgeon General in 2025. Her influence bridges medicine, wellness entrepreneurship, and the “Make America Healthy Again” (MAHA) public health movement.

Key facts

Born: 1988 (approx.), United States

Education: B.A. Biology and M.D., Stanford University

Current role: U.S. Surgeon General (appointed 2025)

Co-founder: Levels Health (2019)

Book: Good Energy (2024, with Calley Means)

Early life and education

Means was raised in a family of professionals and earned both her undergraduate and medical degrees at Stanford University, where she graduated with honors and served as class president. She trained in head and neck surgery at Oregon Health & Science University but left her residency in 2018, citing a desire to address the root causes of chronic disease rather than perform corrective operations.

Career and entrepreneurship

In 2019, Means co-founded Levels, a digital health company using continuous glucose monitors to promote metabolic awareness. As Chief Medical Officer, she helped grow the company to a valuation of roughly $300 million by 2024. Her work emphasizes personalized nutrition, technology-enabled health feedback, and lifestyle optimization.

She also serves as associate editor of the International Journal of Disease Reversal and Prevention and has conducted research at the NIH, Stanford, and NYU.

Public influence and the MAHA movement

Means became a prominent figure in wellness and conservative political circles through her alignment with Health Secretary Robert F. Kennedy Jr.’s MAHA initiative. She and her brother, Calley Means, advocate that metabolic dysfunction underlies most chronic illnesses and argue for major food-system reforms. Critics have challenged her views on vaccines and medical credentials, noting her previously inactive license before federal appointment.

Publications and philosophy

Her 2024 bestseller Good Energy: The Surprising Connection Between Metabolism and Limitless Health promotes “metabolic health” as the foundation for well-being. The book integrates functional-medicine ideas with data from continuous glucose monitoring, urging dietary changes, adequate sleep, exercise, and reduced exposure to processed foods.