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Sigma Nutrition Radio

Danny Lennon
Nutrition Science
Cardiovascular Disease
Nutrition
Ultra-Processed Foods
Public Health
Cholesterol
Cardiovascular Health
Obesity
Performance Nutrition
Sports Nutrition
Mental Health
Chronic Diseases
Eating Disorders
Gut Microbiome
Nutrition Research
Mediterranean Diet
Dietary Patterns
Inflammation
Dietary Fiber
Misinformation

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.

PublishesWeeklyEpisodes636Founded12 years ago
Number of ListenersCategories
Health & FitnessNutrition

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Artwork for Sigma Nutrition Radio

Latest Episodes

In nutrition and health coaching, one of the central challenges is understanding how people actually change, particularly when life is complex, motivation fluctuates, and behaviour is shaped by emotion, identity, environment, and relationships.

In ... more

Supplement safety is often discussed in very general terms, but in practice the risks depend heavily on the individual. A supplement that is reasonable for one person may be inappropriate for another based on their medications, health conditions, dos... more

A common idea is that repeated exposure to sweet taste strengthens our preference for sweetness, which then drives greater intake of sweet foods and drinks. This idea is often used in arguments about fruit, low-calorie sweeteners, diet drinks, and th... more

Electrolytes have become one of the most heavily marketed areas of modern sports nutrition and wellness. What was once a relatively specific tool for certain endurance athletes has increasingly been reframed as an everyday requirement for hydration, ... more

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Recent Guests

Krista Scott-Dixon
Nutrition coach, educator, author of a behavior-change textbook
Precision Nutrition (former), Author of Steal This Coaching
Episode: #614: The Human Skills of Nutrition Coaching – Krista Scott-Dixon, PhD
ZoΓ« Rom
Ultra runner; background in science and environmental journalism; commentator on nutrition messaging in media
Your Diet Sucks podcast
Episode: #611: Electrolyte Mythology: Wellness Marketing vs. Evidence - ZoΓ« Rom & Kylee Van Horn
Kylee Van Horn
Sports dietitian; endurance athlete; founder of Fly Nutrition
Fly Nutrition
Episode: #611: Electrolyte Mythology: Wellness Marketing vs. Evidence - ZoΓ« Rom & Kylee Van Horn
James Morehen
Performance nutritionist in elite rugby, PhD
England Rugby (Head Nutritionist, Men's Senior Team); Bristol Bears; boxing nutrition work
Episode: #608: Performance Nutrition in Elite Rugby – James Morehen, PhD
Emily Leeming
Researcher at King's College London; dietitian
King's College London
Episode: #607: Gut Health & Microbiome Testing: What Evidence Do We Actually Have? – Emily Leeming, PhD
Luke Hanna
Nutrition coach with a master's in Obesity and Clinical Nutrition from University College London; online coach working with clients on body composition goals
Luke Hanna Nutrition / self-employed nutrition coach
Episode: #606: Practical Nutrition Strategies for Fat Loss – Luke Hanna
James Betts
Professor of Metabolic Physiology at the University of Bath; director of CNEM
University of Bath; Center for Nutrition, Exercise and Metabolism (CNEM)
Episode: #605: Fasting, Nutrient Timing & CGMs: Interpreting the Evidence – Prof. James Betts
David Allison
Chief of Nutrition and Director of the USDA's Children's Nutrition Research Center at Baylor College of Medicine, obesity/nutrition researcher
Baylor College of Medicine
Episode: #604: How To Interpret Nutrition Research – David Allison, PhD
Andrew Reynolds
Associate Professor, University of Otago; nutrition epidemiologist
University of Otago
Episode: #603: Should Dietary Fiber Be Considered Essential? – Andrew Reynolds, PhD

Host

Danny Lennon
Host of nutritional science discussions; leads interviews and coordinates show directions.

Reviews

4.9 out of 5 stars from 1.4k ratings
  • Great speakers but lack scientific humility

    Great discussions from leading experts but sadly fail to demonstrate the humility needed as true scientists. The scientific method requires constant evaluation and at any time will be only partially β€œcorrect” representation of the truth.. They weaken their stance by suggesting they are the only source of truth, whilst failing to understand the wider role of food in people’s lives.

    Apple Podcasts
    2
    MedicalPodder
    United Kingdom7 months ago
  • Mmm

    I have not lissoned to this so bast on the reviews

    Apple Podcasts
    4
    Uam a monkey
    United Kingdoma year ago
  • Reliable + Evidence Based

    Evidence based, nuanced, no hype. Expert interviews, deep dives, detailed and clear explanations. My go-to source for all nutrition questions. Having listened to well over 100 episodes, Sigma has easily become my favorite podcast. Danny is an exceptional interviewer, and he and Alan have a talent for cutting through the confusion to tease out what the science really shows (and how/why). I’ve grown in careful, critical thinking in all spheres of life. Highly recommend.

    Apple Podcasts
    5
    JJSchroeder
    United Statesa year ago
  • πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²πŸ‘©πŸ»β€πŸ¦²

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    Apple Podcasts
    5
    #DowntonAbbeyfan!
    United Kingdoma year ago
  • Low Carb Denialists

    Flanagan has a blind hatred of people who regain their health an quality of life by adopting a low carb diet.

    Apple Podcasts
    1
    Combination Lock
    Australia2 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Many reviews highlight practical, actionable insights and strong interview skills by the host.
Listeners praise rigorous, evidence-based discussions and high-quality guests.
Some criticism centers on perceived arrogance or dismissiveness toward non-mainstream views.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Talking Points

Recent interactions between the hosts and their guests.

#611: Electrolyte Mythology: Wellness Marketing vs. Evidence - ZoΓ« Rom & Kylee Van Horn
Q: What are electrolytes and how are they supposed to relate to hydration and performance?
Electrolytes are charged ions that help with fluid balance; they are lost in sweat, but the link between supplementation and performance is nuanced, with many scenarios where extra electrolytes do not meaningfully improve performance. Useful guidance involves considering the type of activity, environment, and individual needs rather than assuming more is better.
PMOS (PCOS) and Diet: What Can Nutrition Realistically Do? - SNP#50
Q: Do different PCOS phenotypes respond differently to the same intervention?
Yes, different phenotypes can respond differently to dietary interventions, which supports a personalized approach that accounts for the dominant features (e.g., hyperandrogenism, ovulatory dysfunction, metabolic disturbances) in each individual.
PMOS (PCOS) and Diet: What Can Nutrition Realistically Do? - SNP#50
Q: Does PCOS alter appetite regulation in a way that affects adherence to a healthy diet?
PCOS can be associated with appetite-related factors and psychological considerations that influence adherence, underscoring the need for non-ststigmatizing, sustainable dietary approaches that fit individual circumstances.
PMOS (PCOS) and Diet: What Can Nutrition Realistically Do? - SNP#50
Q: Can diet influence reproductive outcomes such as ovulation and fertility markers?
Diet can impact factors related to ovulatory function and hormonal regulation, but the effects are variable and often mediated by weight status, insulin resistance, and individual phenotype, making universal claims challenging.
PMOS (PCOS) and Diet: What Can Nutrition Realistically Do? - SNP#50
Q: Do carbohydrate quality aspects like glycemic index or glycemic load matter for PCOS outcomes?
Glycemic index/load may influence glycemic responses and appetite in some individuals, but the evidence is not uniform across all PCOS phenotypes; benefits may be contingent on the broader dietary pattern and weight management context.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
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Frequently Asked Questions About Sigma Nutrition Radio

What is Sigma Nutrition Radio about and what kind of topics does it cover?

The show consistently centers on evidence-based nutrition science, exploring how dietary patterns, metabolic processes, and lifestyle factors influence health and performance. Across episodes, topics range from fiber and gut health to fasting, chronobiology, and the nuances of nutrition research methodology, all discussed with researchers, clinicians, and practitioners. Listeners can expect deep dives into study design, practical applications for clients or patients, and thoughtful critiques of prevailing nutrition claims. A standout feature is the blend of rigorous science with real-world coaching and clinical perspectives, making complex findings accessible without oversimplification.

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How many listeners does Sigma Nutrition Radio get?

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What are the audience demographics for Sigma Nutrition Radio?

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How many subscribers and views does Sigma Nutrition Radio have?

To see how many followers or subscribers Sigma Nutrition Radio has on Spotify and other platforms such as Castbox and Podcast Addict, simply upgrade your account. You'll also find viewership figures for their YouTube channel if they have one.

Which podcasts are similar to Sigma Nutrition Radio?

These podcasts share a similar audience with Sigma Nutrition Radio:

1. The Proof with Simon Hill
2. Iron Culture presented by MASS
3. The Revive Stronger Podcast
4. Barbell Medicine Podcast
5. Docs Who Lift

How many episodes of Sigma Nutrition Radio are there?

Sigma Nutrition Radio launched 12 years ago and published 636 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Sigma Nutrition Radio?

Our systems regularly scour the web to find email addresses and social media links for this podcast. We scanned the web and collated all of the contact information that we could find in our podcast database. But in the unlikely event that you can't find what you're looking for, our concierge service lets you request our research team to source better contacts for you.

Where can I see ratings and reviews for Sigma Nutrition Radio?

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What guests have appeared on Sigma Nutrition Radio?

Recent guests on Sigma Nutrition Radio include:

1. Krista Scott-Dixon
2. ZoΓ« Rom
3. Kylee Van Horn
4. James Morehen
5. Emily Leeming
6. Luke Hanna
7. James Betts
8. David Allison

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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