Sigma Nutrition Radio

Latest Episodes:

#391: Is There a Body Weight Set Point?: Models of Body Mass Regulation Jun 15, 2021

Show notes

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 feedback systems, environment, behaviour, as well as discussing both the "thrifty gene hypothesis" and John Speakman's "drifty gene hypothesis".

#390: Gil Carvalho MD, PhD – Dairy, Olive Oil & Diet Debates: Understanding Evidence Jun 09, 2021

Show notes

Gil Carvalho, MD PhD is a medical doctor, research scientist, science communicator. Dr. Carvalho trained as a medical doctor in the University of Lisbon, in his native Portugal, and later obtained a PhD in Biology from Caltech (California Institute of Technology). He has published peer-reviewed medical research spanning the fields of genetics, molecular biology, nutrition, behaviour, aging and neuroscience. In this episode we discuss:

Dairy: is it over-emphasized in the Dietary Guidelines for Americans?
Dairy tolerance
Critical importance of substitution effects
Differences between difference types of dairy on health
Claims by some WFPB advocates that olive oil can negatively impact endothethial function
Distinguishing between acute and chronic effects
Gil's work with Antonio Damasio on feelings

Show notes: https://sigmanutrition.com/episode190

#389: Renee McGregor, RD – Why Are Athletes Under-Eating? Jun 04, 2021

Show notes

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 and professional athletes that have developed a dysfunctional relationship with food that is impacting their performance, health and career. Her practice and knowledge is supported by extensive experience of working in both clinical and performance nutrition, including, Olympic, Paralympic and Commonwealth teams.

She is the co-founder and director of #TRAINBRAVE a campaign raising the awareness of eating disorders in sport; providing resources and practical strategies to reduce the prevalence.

She is on the REDS advisory board for BASES (The British Association of Sport and Exercise Science) and sits on the International Task Force for Orthorexia.

Find the show notes at sigmanutrition.com/episode389

#388: Consequences of Weight Stigma and Weight Bias May 27, 2021

Show notes

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. What evidence do we currently have? And what questions remain unanswered?

Segments:

Today's Topic in Focus [03:39] Listener Questions [59:48] Quack Asylum [68:55] Random Recommendations [72:07]

You can find the show notes to this episode at sigmanutrition.com/episode388

If you wish to support the podcast you can do so on Patreon at patreon.com/sigmanutrition or directly via the site at sigmanutrition.com/donate

#387: Shift Work and Health May 18, 2021

Show notes

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 work impact nutrient metabolism? What nutrition, sleep and lifestyle strategies can help shift workers?

Show notes at: sigmanutrition.com/episode387

#386: Deirdre Tobias, ScD – Study Design, Diet Collection Methods and Nutrition Epidemiology May 12, 2021

Show notes

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 Chan School of Public Health, Boston, MA, under mentor Dr. Frank B. Hu.

Dr. Tobias is co-Instructor of Nutrition Epidemiology with Dr. Walter Willett and faculty member at the Harvard TH Chan School of Public Health. Her epidemiologic research focuses on identifying lifestyle risk factors and underlying mechanisms related to obesity and its major chronic diseases, including type 2 diabetes and cancer.

Dr. Tobias is currently the Academic Editor for the American Journal of Clinical Nutrition.

Show notes at sigmanutrition.com/episode386

#385: Insulin Resistance & Diet May 04, 2021

Show notes

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 disorder, that goes beyond one single pathway or cause. There is also a discussion on the mechanisms of insulin resistance pathogenesis. Specifically, we talk about the accumulation of ectopic fat. Ectopic fat is the storage of triglycerides in tissues other than fat tissue, such as the liver, skeletal muscle, heart, and pancreas.

There is also an overview of the Twin-Cycle Hypothesis, which was discussed in more detail in a previous episode with Prof. Roy Taylor. In addition, we give special mention to liver fat accumulation and the relationship between insulin resistance and non-alcoholic fatty liver disease (NAFLD).

Then various diet interventions are assessed for their potential usefulness to those with insulin resistnace. This includes different diet types (e.g. whole-food plant-based diet, low-carbohydrate ketogenic diet, etc.), role of macronutrients, pre-loading studies, and the role of meal timing and circadian effects.

Find the show notes at https://sigmanutrition.com/episode385

#384: Research Review: The Interference Effect & Concurrent Training Apr 27, 2021

Show notes

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 the MASS research review, which breaks down the latest research studies relevant to those interested in strength training, strength sports, and bodybuilding.

From April 27th to May 4th you can get a significant discount on a MASS subscription by visiting sigmanutrition.com/mass-sale/

#383: Irritable Bowel Syndrome (IBS) & Diet Apr 20, 2021

Show notes

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 gut-brain axis, first line treatments, impact of fibre, and evidence on the low FODMAP diet.

Today's Topic in Focus: IBS & Diet [06:20]

"I Have a Question!" [74:47]

Quack Asylum [79:30]

Random Recommendations [86:49]

Show notes available at sigmanutrition.com/episode383

#382: Andy Morgan – Practicalities of Body Composition Change Apr 06, 2021

Show notes

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 nutrition and training resources in the form of ebooks, articles and podcasts, which can be found on the Ripped Body website. He recently released the third edition of the Diet Adjustments Manual.

You can find the show notes to this episode at: sigmanutrition.com/episode382

Our TOPPODCAST Picks

Follow Us

Stay Connected

Related Podcasts

Links

Stay Connected