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PODCAST

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.

health & fitness nutrition

All Episodes

48:29

#525: Cholesterol-Lowering Medication – Dr. Paddy...

Sigma Nutrition Radio ·

2024/06/11

Cholesterol-lowering medications, particularly statins, play a pivotal role in reducing low-density lipoprotein cholesterol (LDL-C) and apolipoprotein B (apoB) concentrations, which are causal markers in atherosclerosis development. The efficacy of these medications is well-documented, with numerous clinical trials demonstrating substantial benefits in reducing cardiovascular events and improving overall mortality rates. Despite the robust evidence supporting the benefits of cholesterol-lowering

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01:26:02

#524: Strength & Fitness Levels for Reducing Chronic...

Sigma Nutrition Radio ·

2024/06/04

When aiming for healthy aging and reducing chronic disease risk over the lifecourse, exercise, specifically a combination of resistance training and cardiorespiratory fitness, has a fundamental role to play. In addition it can mitigate age-related declines and support independence in later years. A strong evidence base exists showing the benefits of increased strength and cardiorespiratory fitness on a range of important outcomes related to lifespan and healthspan. But some intriguing questions

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12:22

SNP29: Athletes & Plant-Based Diets – Evidence &...

Sigma Nutrition Radio ·

2024/05/28

Contemporary society is witnessing a growing interest in, and embracing of, plant-based diets. Numerous athletes are now gravitating towards such dietary choices, motivated by concerns for health, performance or ethics. Consequently, coaches, nutritionists, and other fitness experts find themselves increasingly tasked with guiding athletes who adhere to plant-based diets. For coaches and trainers, understanding the possible impacts of these dietary preferences on athletes’ objectives is paramount,

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01:14:52

#523: How Trustworthy is the Food Frequency...

Sigma Nutrition Radio ·

2024/05/21

The Food Frequency Questionnaire (FFQ) stands as a cornerstone in nutritional research, offering valuable insights into dietary patterns and habits over a specified period. Despite its widespread use and established utility, the FFQ has not been immune to criticism, much of which arises from a misunderstanding of its purpose and inherent limitations. At its core, the FFQ is designed to assess the frequency and quantity of food consumption, aiming to capture long-term dietary behaviors rather than

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01:19:55

#522: Does Personalized Nutrition Outperform General...

Sigma Nutrition Radio ·

2024/05/14

Links: Subscribe to Premium (15% off this week!) Download detailed study notes and episode transcript Go to episode page About This Episode: “Personalized nutrition” has been promoted as an approach that will improve people’s health by prescribing them specific dietary recommendations based on their own genetic and phenotypic data. The premise is that given we each respond differently to foods, having general dietary recommendations may be doing many people a disservice. And by using an array of

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01:13:35

#521: How Does Coffee Impact Our Health?

Sigma Nutrition Radio ·

2024/05/07

The relationship between coffee and health is complex, encompassing areas like blood lipids, cardiovascular disease, neurodegenerative diseases, anxiety, and depression. Coffee has an interesting nutrient profile and contains diverse bioactive compounds that influence metabolism. Coffee has a potential impact on cardiovascular disease risk, with mechanisms that highlight potential benefits and some concerns. There may be an impact on blood pressure and blood lipid, but there are important nuances to

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49:26

#520: How Exercise Impacts Appetite, Food Intake and...

Sigma Nutrition Radio ·

2024/04/30

Links: Go to episode page Subscribe to Premium Join the Sigma email list Go to our recommended resources About This Episode: Have you ever wondered how exercise affects our appetite and energy intake? While we know that single bouts of exercise can create a short-term energy deficit, do they also influence our hunger levels? And what about long-term exercise training? Could it modify our appetite in ways that help us better control our weight? Recent research suggests that exercise may indeed play

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10:10

SNP28: How To Eat for Longevity

Sigma Nutrition Radio ·

2024/04/23

In a world flooded with claims, advice, and recommendations on how to extend our lifespan, the buzz around various diet approaches, supplement regimens, and lifestyle hacks is deafening. But amidst the noise, one must pause to ponder: Are these claims rooted in science? And perhaps more crucially, are we even asking the right questions or pursuing the correct goals in our quest for longevity? Join us in our upcoming podcast episode as Danny delves into these intriguing questions. Rather than getting

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47:58

#519: Eating Disorders: Inpatient Treatment &...

Sigma Nutrition Radio ·

2024/04/16

Acronyms & Terminology: NHS - National Health Service (UK) CAMHS eating disorder unit - Child & Adolescent Mental Health Service Tier 4 Services - CAMHS services are organized through a tiered system. Tier 4 is the highest on the hierarchy and relates to highly specialized or inpatient services. NG Feed - nasogastric (NG) tubes MDT decision - multidisciplinary team (MDT) decision-making CBT-E - Enhanced Cognitive Behaviour Therapy - a “transdiagnostic” treatment for all forms of eating disorder

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01:20:22

#518: Nutritional Geometry, Philosophy of Science & A...

Sigma Nutrition Radio ·

2024/04/09

Links: Course: Applied Nutrition Literacy Subscribe to Premium Go to episode page (study links, bio, etc.) About This Episode: There has been much debate about the role of nutritional reductionism in research. This approach generally aims to study diet’s effects by breaking down the intricate web of dietary factors into smaller, more manageable components. But critics have asked does this approach truly capture the full picture of nutrition’s influence on our well-being? In an attempt to help

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38:05

#517: Reflecting on Ten Years of Lessons

Sigma Nutrition Radio ·

2024/04/03

Links: Enroll in our new course! Go to episode page Subscribe to Sigma Nutrition Premium About This Episode: Sigma Nutrition is ten years old this week! Over this time, I’m grateful for a wealth of insights garnered from interviews with some of the brightest minds in the field of evidence-based nutrition science. Through these conversations, I’ve come to understand the critical underpinnings of scientific thinking, the importance of honing our critical appraisal skills, and the crucial distinction

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01:13:02

#516: How to Read Nutrition Studies (Become Confident...

Sigma Nutrition Radio ·

2024/03/27

Links: COURSE: Applied Nutrition Literacy Episode page About This Episode: Navigating the vast landscape of research literature, particularly in the realm of nutrition science, presents numerous challenges for readers seeking to extract meaningful insights. Before diving into research papers, individuals should have a precise understanding of the specific questions they seek to address. Without this clarity, there is a risk of wasting time on irrelevant studies or misinterpreting findings

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12:26

AMA: Do Low-carbers Need Less Vitmain C? Does Omega-3...

Sigma Nutrition Radio ·

2024/03/19

Questions Answered in This Episode: [01:22] Do “low-carbers” need less vitamin C? [14.56] If you were to advise a company to establish solid workplace health fundamentals, what would you tell them? [26.20] Which compounds typically found in animal products would be interesting to supplement for health and performance purposes in vegan/vegetarian populations? [40.09] In omega 3 supplementation studies it isn’t common to see a baseline measurement of omega 3 index. Why? [44.10] What is your process

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01:14:51

#515: Does Dietary Fat Quality Causally Affect...

Sigma Nutrition Radio ·

2024/03/12

Links: Go to episode page Subscribe to Premium See recommended resources Receive the Sigma email newsletter About This Episode: The question of whether dietary fat quality causally affects atherosclerosis risk has been a subject of extensive research and debate within the field of nutrition and cardiovascular health. Atherosclerosis, the build-up of plaque in arteries, is a key factor in the development of cardiovascular diseases, including heart attacks and strokes. Traditionally, dietary fat has

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33:22

#514: Plant-derived Fatty Acids – Ella Baker, PhD

Sigma Nutrition Radio ·

2024/03/05

Links: Go to episode page Subscribe to Premium Join the Sigma mailing list Sigma's Recommended Resources About This Episode: There is a lot of interesting research going on related to plant-derived fatty acids, owing to their potential to help improve health and provide sustainable alternatives to other sources of healthy-promoting fatty acids. In addition to work looking at the long-investigated alpha-linolenic acid (ALA), some research is now starting to look at more novel fatty acids like

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31:25

#513: Kidney Stones & Diet – Deepa Kariyawasam, RD

Sigma Nutrition Radio ·

2024/02/27

Links: Go to episode page Subscribe to Premium Sigma's recommended resources Join our email newsletter for free About This Episode: Kidney stones, crystalline deposits formed within the kidneys, present a formidable challenge to individuals grappling with their debilitating effects. These mineral accumulations, though small in size, can inflict significant pain and discomfort as they navigate through the urinary tract. Understanding the nuances of dietary management and treatment for kidney stones

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10:52

What are Dietary Reference Intakes? Origins,...

Sigma Nutrition Radio ·

2024/02/20

Acronyms: RDA = Recommended Dietary Allowance AI = Adequate Intake UL = Tolerable Upper Intake Level EAR = Estimated Average Requirement About This Episode: Dietary Reference Intakes (DRIs) are a set of nutrient reference values, developed in the US, that are used to assess and plan the nutrient intake of healthy individuals. They provide guidelines for the recommended amounts of various nutrients to maintain health and prevent deficiencies or excesses. Different countries may have their own

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01:10:07

#512: Alzheimer’s Disease – Drs. Ayesha & Dean Sherzai

Sigma Nutrition Radio ·

2024/02/13

Links: Go to episode page (with episode resources) Subscribe to PREMIUM Get the Sigma email newsletter See Sigma's recommended resources About This Episode: Alzheimer’s disease has a profound impact on individuals, families, and societies worldwide. As a progressive neurodegenerative disease, it not only robs individuals of their cognitive abilities but also places an immense emotional and economic burden on caregivers. Mechanistically, the causes of Alzheimer’s are incredibly complex and not

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54:49

#511: Null By Design – When “No Effect” Doesn’t Mean...

Sigma Nutrition Radio ·

2024/02/06

Links: Go to episode page (with episode resources) Subscribe to Premium Receive the Sigma Nutrition newsletter About This Episode: Numerous nutrition studies present findings of “no effect,” but interpreting such results requires caution. A null finding, indicating an absence of impact from a nutrient or exposure, may not necessarily suggest a lack of effect overall. Instead, it could stem from issues related to the study’s design, the nature of the exposure, or participant characteristics. We’ve

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57:28

#510: Social Comparison: Evidence on its Impacts &...

Sigma Nutrition Radio ·

2024/01/30

Links: Go to episode page (with supporting links/resources) Subscribe to PREMIUM Learn more about Sigma Nutrition Crushing Comparisons course About This Episode: Social comparison theory, developed by psychologist Leon Festinger in the 1950s, posits that individuals determine their own social and personal worth based on how they stack up against others. This theory suggests that people engage in social comparisons to evaluate their abilities, opinions, and attributes, often choosing relevant

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