Sigma Nutrition Radio
Discussions about the science of nutrition, dietetics and health. The podcast that educates through nuanced conversations, exploring evidence and cultivating critical thinking. Hosted by Danny Lennon.
- Update frequency
- every 7 days
- Average duration
- 55 minutes
- Episodes
- 592
- Years Active
- 2014 - 2025
#397: Dietary Nitrates & Nitrites
In this episode Danny & Alan discuss the impacts of nitrates and nitrites on health. They look at the beneficial impacts of dietary nitrate, as well as issues around nitrites in processed meat.
Show …
#396: Leigh Frame, PhD – Nutrient Trials: RCT Design, Ethics and Placebo Groups
Dr. Leigh Frame, PhD is Director of Integrative Medicine at George Washington School of Medicine and Health Sciences in Washington DC. Dr. Frame received her PhD in Human Nutrition, as well as a Mast…
#395: Prof. Carel le Roux – Current Thinking in Obesity Treatment
Professor le Roux is an expert in metabolic medicine and is currently a Professor of Experimental Pathology, University College Dublin. He is recognised as a world leader in metabolism and obesity.
P…
#394: Gar Benn – Nutrition Coaching Q&A
Gar Benn is the Head of Coaching at Sigma Nutrition, where he works with nutrition coaching clients and oversees the coaching services.
He is the owner of CityGym Limerick, a powerlifting-centric gym…
#393: Vitamin D: Does Supplementation Actually Improve Health?
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Vitamin D status is linked to a variety of health outcomes, and avoiding or correcting deficiency is important. However, does supplementing with vit…
#392: Clare Pettinger, PhD, RD – Environmentally Sustainable Diets & Food Access
Dr. Clare Pettinger is a Registered Dietitian, Public Health Nutritionist and experienced educator. Dr. Pettinger publishes research in the public health nutrition field, and lectures at the Universt…
#391: Is There a Body Weight Set Point?: Models of Body Mass Regulation
In this episode Danny and Alan discuss the three primary models used to explain body mass regulation: 1) Set Point Model, 2) Settling Point Model, 3) Dual Intervention Model. They discuss the role of…
#390: Gil Carvalho MD, PhD – Dairy, Olive Oil & Diet Debates: Understanding Evidence
#389: Renee McGregor, RD – Why Are Athletes Under-Eating?
Renee McGregor is a leading sports dietitian, specialising in Eating Disorders, REDs, The Female Athlete, athlete health and performance.
She is regularly asked to work directly with high performing …
#388: Consequences of Weight Stigma and Weight Bias
Danny & Alan discuss the current evidence on the health consequences and societal consequences of weight stigma and weigh bias. This includes implicit bias, explicit bias, and internalization of bias…
#387: Shift Work and Health
In this episode Danny and Alan discuss the relationship between shift work and health. Why does shift work have negative health impacts? How can one mitigate circadian misalignment? How does shift wo…
#386: Deirdre Tobias, ScD – Study Design, Diet Collection Methods and Nutrition Epidemiology
Dr. Tobias is a nutrition and obesity epidemiologist at the Brigham and Women’s Hospital and Harvard Medical School in Boston, MA. She received doctoral and postdoctoral training from the Harvard TH …
#385: Insulin Resistance & Diet
In this episode we explore the causes of insulin resistance, and the dietary modifications that may help those with insulin resistance.
We discuss how insulin resistance is a complex metabolic disord…
#384: Research Review: The Interference Effect & Concurrent Training
In this episode Greg Nuckols and Mike Zourdos breakdown two research papers related to the interference effect and concurrent training.
Greg and Mike (along with Eric Helms and Eric Trexler) produce…
#383: Irritable Bowel Syndrome (IBS) & Diet
In this episode Danny and Alan discuss irritable bowel syndome and the evidence related to dietary interventions. They discuss diagnosis of the condition, various sub-types, potential mechanisms, the…
#382: Andy Morgan – Practicalities of Body Composition Change
Andy Morgan is the founder of RippedBody.com and an online coach. He co-authored the Muscle & Strength Pyramids books along with Dr. Eric Helms and Andrea Valdez. He has published a host of excellent…
#381: Prof. Chris Packard – LDL Cholesterol, ApoB & Atherosclerosis
Prof. Chris Packard holds an Honorary Professorship of Vascular Biochemistry at the University of Glasgow. Over his career, Professor Packard has focussed on two aspects of atherosclerosis research, …
#380: Prof. Barry Popkin – The Nutrition Transition & Using Policy Actions to Create Healthier Diets
Prof. Barry Popkin is the W.R. Kenan Jr. Distinguished Professor of Nutrition at the University of North Carolina at Chapel Hill. He is a nutrition and obesity researcher at the Carolina Population C…
#379: Obesity & Chronic Disease Risk with Dr. Spencer Nadolsky
Danny and Alan are joined by Dr. Spencer Nadolsky. Dr. Nadolsky is a board-certified obesity specialist, lipidologist, and family physician.
In this episode we discuss the strengths and limitations o…
#378: Nutritional Epidemiology
In this episode Danny and Alan discuss some critical aspects to understand about nutritional epidemiology in order to evaluate diet-disease relationships appropriately. Of particular focus in this ep…