Layne Norton earned a BS in biochemistry at Eckerd College in Florida. He then completed a PhD in Nutritional Sciences at the University of Illinois at Urbana-Champaign in 2010, under Professor Donald Layman. His dissertation looked at how the amino acid leucine determines how much protein a meal needs to switch on muscle building.
Alongside his studies he competed in drug-tested bodybuilding, winning pro status in 2006, and later moved to powerlifting. He won US national titles, set an IPF world record in the squat in the 93 kg class (303 kg) in 2015, and won the IPF masters world title in 2022.
He became known online as a coach and science communicator who explains nutrition research in plain terms and challenges popular diet claims. He co-wrote the book Fat Loss Forever and guides on contest preparation and reverse dieting.
Today he runs BioLayne (coaching and education) and hosts The Dr. Layne Norton Podcast. He co-founded the Carbon Diet Coach app and Outwork Nutrition, a supplement company, and appears often on podcasts such as Huberman Lab and The Peter Attia Drive.
Known for
- Flexible, numbers-based dieting (track calories and protein)
- Myth-busting diet claims with the evidence hierarchy
- Powerlifting world titles as a natural athlete
- Protein and leucine research
- The Carbon Diet Coach app