Sigma Nutrition Radio

Dr. Michael Grandner is the Director of the Sleep and Health Research Program and an Assistant Professor in the Department of Psychiatry in the University of Arizona College of Medicine – Tucson. He …

Dr. Samia Mora is an Associate Professor of Medicine at Harvard Medical School, Boston, Massachusetts. She is a cardiovascular medicine specialist at the Brigham and Women’s Hospital, where she is th…

Dr. Fergus Connolly is one of the world’s foremost human performance thought leaders and influencers, and has applied performance science with leading sports, military, and business teams. He is the …

Dr. Allison Brager is a behavioral neurobiologist with an expertise in sleep and circadian rhythms for the United States Army (active duty), as well as their contributions to psychiatric, neurologica…

Dr. Andrew Chappell is a Lecturer/Researcher at Robert Gordon University, conducting research in sports nutrition, with a specific focus on bodybuilding.

Andrew is also a world-class natural bodybuil…

Dr Meeta Singh is a sleep doctor whose work and research focuses on “coaching the sleep muscle” to help maximize performance in both individual athletes and sports teams.

She is the Service chief of …

Ciaran O’ Regan is currently a strength & conditioning coach in Cork, Ireland, predominantly working with rugby teams. He recently began a Professional Doctorate under John Kiely of University of Cen…

Dr. Robin Tucker is currently an Assistant Professor of Food Science & Human Nutrition at Michigan State University.

The Ingestive Behavior Lab at MSU, under Dr. Tucker’s direction, examines the biol…

Stephan Guyenet is an obesity researcher, neurobiologist, and author. In addition to his research, he enjoys synthesizing and communicating science for a general audience over at his hugely successfu…

Daniel Davey has worked as a performance nutritionist with a host of elite athletes in a range of sports such as golf, athletics, rugby and GAA.

He is perhaps best known for his roles working as a pe…

John Berardi, PhD is best known as the co-founder of Precision Nutrition. He is also the founder of Change Maker Academy, which is devoted to helping people turn their passion for health and fitness …

Dr. Tommy Wood is a Research Assistant Professor at the University of Washington in the Pediatrics Department. esearch focuses on ways to increase resilience of, and treat injury of, the developing b…

Brad is a trained Exercise Physiologist, Molecular Biologist, and Biostatistician. He completed his a post-doctoral fellowship in translational science at Providence Medical Research Center, where he…

Associate Professor Leonie Heilbronn is the leader of the Obesity and Metabolism group based at the University of Adelaide, Australia.

She has a sustained record of translating basic discoveries in n…

John Berardi, PhD is best known as the co-founder of Precision Nutrition. He is also the founder of Change Maker Academy, which is devoted to helping people turn their passion for health and fitness …

Sigma Nutrition Radio has reached the 300th episode! To mark the occassion, Patreon supporters of the podcast and subscribers to the Sigma Synopsis email were able to submit questions about anything …

Dr. Mark Hopkins is a lecturer in nutritional physiology at the University of Leeds, UK. His research focuses primarily on the physiological mechanisms of appetite control, and the interaction betwee…

David Zeevi is an independent research fellow at Rockefeller University in New York. His current work focuses on developing computational methods for studying microbial ecology in the human gut and i…

Cliff Harvey has a PhD in Nutrition from Auckland University of Technology (AUT), with his research focus being on ketosis, ketogenesis, and individual responses to diet. His research interests inclu…