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18 episodes
Sigma Nutrition Radio
by Danny Lennon · English
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.
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#626: Practical Diet Considerations for Healthy Aging - Prof. Charlyn Black
Practical diet and lifestyle considerations for healthy aging, focusing on what’s inevitable vs modifiable, why “health span” matters more than lifespan, and which nutrients/patterns become…
10 Nov 2026 · 37m · 14 chaptersCan Micronutrient Supplements Help With Anxiety, Depression & Emotional Regulation? (SNP55)
The episode reviews three randomized trials from Professor Julia Rucklidge’s group testing high-dose micronutrient supplements for mental health outcomes: anxiety/depressive symptoms in adults…
3 Nov 2026 · 17m · 6 chapters#625: Does Changing the Microbiome Actually Improve Health? – Prof. Harry Sokol
Whether changing the gut microbiome improves health; how to judge microbiome claims (correlation vs causality); where interventions work best; diet and microbiome; how gut bacteria affect drug…
27 Oct 2026 · 46m · 22 chapters#624: Can Athletes Eat for Performance and the Planet? – Peter Res
Whether elite athletes can reduce their diet’s environmental impact while still meeting training, recovery, and performance needs; what sustainable dietary patterns look like in practice and how to…
20 Oct 2026 · 37m · 18 chapters#623: Testosterone Testing: What Do the Results Mean? When Does TRT Help? – Austin Baraki, MD
Testosterone testing and how to interpret results; when testing is justified (diagnosis vs screening), what labs measure (total vs free testosterone), why cutoffs and single results can mislead, and…
13 Oct 2026 · 1h 8m · 25 chapters#622: Body Composition Testing: Methods & Interpretation – Prof. Grant Tinsley
Body composition testing and interpretation, including what “body composition” means, how different measurement methods estimate fat mass and fat-free mass, and how to handle technical and biological…
6 Oct 2026 · 1h 4m · 21 chapters#621: Hedonic Overeating, Food Wanting and Impact of Perception – Prof. Graham Finlayson
How hedonic overeating happens, focusing on distinctions between food liking (pleasure) and food wanting (motivational pull), and how perception and context shape overeating risk.
22 Sep 2026 · 43m · 14 chapters#620: BPC-157 and Peptide Medications: What Do We Know? – Jordan Feigenbaum, MD
Peptide medications (especially BPC-157) for injury recovery, gut healing, and “longevity/healthspan” claims; what evidence exists vs what people assume; risks from sourcing and uncertain…
15 Sep 2026 · 58m · 23 chapters#619: How Much Fish Should a Healthy Diet Contain?
How much fish a healthy diet should contain, comparing international guidelines and the evidence behind dose targets (about 2 servings/week, 120–150 g/serving) and how effects may depend on what fish…
8 Sep 2026 · 1h 3m · 22 chapters#618: How Wellness & Optimisation Culture Can Commodify Science – Nick Tiller, PhD
How wellness/optimization culture “commodifies” science—using scientific-sounding language, cherry-picked studies, and hype to sell products and build followings—while misrepresenting evidence.
1 Sep 2026 · 57m · 19 chapters#617: What Does Effective Athlete Support Look Like in Practice? – Gemma McGuinness
Practical athlete support in “real life,” arguing nutrition should be treated as an investment in performance, health, and behavior—not just short-term nutrient targets.
25 Aug 2026 · 47m · 18 chaptersFiber: Independent Benefits or Just a Proxy for Healthy Foods?
Whether fiber’s health benefits are independent effects or mainly a proxy for other healthy foods (fruits, vegetables, legumes, whole grains), and how to disentangle this in research.
18 Aug 2026 · 21m · 6 chapters#616: More Testing, Better Health? Harms of Overdiagnosis & Overtreatment - Austin Baraki, MD
Screening and medical testing in asymptomatic people—how “early detection” can fail due to false positives, diagnostic cascades, overdiagnosis (finding conditions that won’t cause symptoms/death),…
11 Aug 2026 · 1h 15m · 19 chapters#615: Why Processing Doesn't Determine the Healthfulness of Plant-Based Diets – Alysha Thompson, PhD
A prospective UK Biobank cohort study examining whether ultra-processed foods (NOVA group 4) modify the association between plant-based diet quality and long-term outcomes (all-cause mortality, type…
4 Aug 2026 · 56m · 19 chapters#614: The Human Skills of Nutrition Coaching – Krista Scott-Dixon, PhD
Human skills in nutrition coaching—building effective, safe, supportive relationships; using counseling-informed tools within scope of practice; applying therapeutic alliance principles; and…
21 Jul 2026 · 57m · 23 chapters#613: Supplement Safety & Medication Interactions – Giulia Guerrini, MPharm
Supplement safety and medication interactions, emphasizing that “safe” depends on context (timing, formulation, route), evidence quality, dosing, stacking multiple supplements, and product…
14 Jul 2026 · 57m · 20 chapters#612: Does Sweet Taste Exposure Actually Develop Preference? – Prof. Katherine Appleton
Whether repeated exposure to sweet taste (including low/no-calorie sweeteners) increases sweet preference and later sweet food intake, versus reducing sweet exposure changing preferences. Guest: Prof.
7 Jul 2026 · 39m · 15 chapters#611: Electrolyte Mythology: Wellness Marketing vs. Evidence - Zoë Rom & Kylee Van Horn
The episode critiques electrolyte supplement marketing and “wellness/biohacking” narratives versus evidence.
30 Jun 2026 · 55m · 22 chaptersWe use cookies.They keep VO running smoothly and help us improve it. Privacy policy