Sigma Nutrition Radio

Nov 18 2024 550 ep. 55 mins 11.6k
Sigma Nutrition Radio Podcast artwork

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.

  Health & Fitness
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#543: Eye Health & Nutrition – Prof. John Nolan

Nov 18 2024 50 mins  
In this episode, we dive deep into the world of ocular nutrition with Professor John Nolan, exploring how specific nutrients can play crucial roles in preserving eye health, improving vision and supporting cognitive function. With age-related macular degeneration (AMD) affecting millions globally, Professor Nolan sheds light on groundbreaking research showing how certain carotenoid

#542: Nutrients for Cognitive Performance in Sports – Prof. Shawn Arent, PhD

Nov 11 2024 82 mins  
In the world of sports nutrition, understanding how different supplements and nutrients impact not just physical performance but also cognitive function is rapidly gaining traction. Athletes are constantly seeking that competitive edge, and while many are familiar with the benefits of carbohydrates and caffeine for energy and focus, there’s much more at play. Emerging research is

#541: Lean Mass Hyper Responders & the Lipid Energy Model: Do the Claims Stand Up to Scrutiny?

Nov 04 2024 89 mins  
When discussing cardiovascular health, few topics stir as much debate as cholesterol, particularly in relation to low-carb and ketogenic diets. Recently, there’s been significant attention given to a proposed model that suggests high LDL cholesterol may not pose the same cardiovascular risk in certain individuals, specifically those labeled as “lean mass hyper-responders.” Th

Fasting for Health: What Do We Know? (SNP34)

Oct 28 2024 21 mins  
Fasting has gained immense popularity as a dietary approach, but what does the scientific evidence say about its health benefits? Studies have explored how fasting might influence metabolic markers, energy expenditure, and even aging. However, while fasting shows promise in some animal models, translating these effects to humans is less clear. A key part of the debate centers on wh

#540: How Can We Improve Body Image and Self-Esteem Without Physique Change? – Gabrielle Fundaro, PhD & Eric Trexler, PhD

Oct 21 2024 61 mins  
Body image and self-worth are deeply intertwined concepts that influence how we see ourselves and interact with the world. Many people believe that changing their physique is the key to improving their body image, but is it really that simple? This connection between appearance and self-esteem raises important questions about how we define confidence and whether our sense of worth

#539: How Does Carbohydrate Availability Impact Resistance Training? – Cliff Harvey, PhD & Eric Helms, PhD

Oct 14 2024 92 mins  
Some suggest that, since individual lifts or short-duration efforts don’t rely heavily on glycogen, carb intake might not be critical for strength athletes. If glycogen depletion isn’t a pressing issue, could athletes thrive on lower-carb diets without sacrificing performance? Or could there be overlooked benefits to having greater carbohydrate availablily in those sessions? I

#538: Can Fish Oil Supplementation Increase Risk of Irregular Heart Rhythms?

Oct 07 2024 55 mins  
Omega-3 fatty acids are often viewed as beneficial or, at worst, neutral supplements when it comes to supporting cardiovascular health, lowering triglycerides, and offering anti-inflammatory effects. Much of the focus in recent years has centered on understanding how significant these benefits are, particularly for heart health, with many studies highlighting the potential for omeg

#537: Appetite Regulation, Metabolic Compensation and More – Stephan Guyenet, PhD

Sep 30 2024 64 mins  
This is an “ask me anything” (AMA) episode with Dr. Stephan Guyenet, an expert in obesity neuroscience and eating behavior. This episode was originally published on Sigma Nutrition Premium. If you’re interested in subscribing to Sigma Nutrition Premium, then check all the details here. Questions Answered: [04.27] If we surgically remove adipose tissue, do leptin levels sudde

Caffeine Metabolism and Individual Variability

Sep 23 2024 20 mins  
Questions Answered in This Episode [02:28] Caffeine metabolism and individual variation. [14:47] High-sodium electrolyte supplements & recreational trainees. [32:55] Is a “too low” BMI a problem? [41:38] Are claims about vegan diets being nutritionally insufficient overblown? [51:33] Familial hypercholesterolemia & further lipid-lowering [58:05] Menopause, resistenace training

#536: Improving Sleep in Combat Sports Athletes – Ian Dunican, PhD

Sep 16 2024 75 mins  
In the world of combat sports, optimizing performance extends beyond physical training and nutrition—sleep plays a critical role. Maladaptive sleep behaviors, such as inconsistent sleep schedules and inadequate sleep duration, can significantly impair an athlete’s performance by reducing cognitive function, reaction time, and recovery ability. Understanding these impacts is cru