Sigma Nutrition Radio
655 episodes - English - Latest episode: 28 days ago - ★★★★★ - 363 ratingsDiscussions 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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Episodes
#488: Does Time of Day Impact Hunger, Appetite & Satiety?
July 11, 2023 05:00 - 1 hour - 121 MBLinks: Episode page (with links to resources) Receive Danny's weekly emails Subscribe to PREMIUM About This Episode: The topic of whether hunger and satiety are affected by the time of day has generated considerable interest within the nutrition research community. Researchers have been particularly intrigued by the potential influence of circadian rhythms on caloric intake throughout the day. Initially, a number of studies proposed that consuming high energy intakes in the morning...
#487: Weight Cutting in Combat Sports – Jordan Sullivan
July 05, 2023 05:00 - 1 hour - 103 MBLinks: Join notification list for book pre-orders Go to episode page (w/ resources) Subscribe to Sigma Nutrition Premium About This Episode: “Weight cutting” is a common practice in weight-class based sports. And typically, combat sport athletes have reported cutting the largest amounts of weight for competition. The concept of cutting weight is based on the assumption that a size advantage gives a performance advantage in combat sports. And by getting into a lower weight class tha...
#486: Blood Glucose Spikes: How High is Too High? – Mario Kratz, PhD & Nicola Guess, PhD
June 27, 2023 05:00 - 1 hour - 112 MBLinks: Go to episode page (with resources) Receive Danny's weekly emails Subscribe to PREMIUM Twitter: @NutritionDanny Instagram: @dannylennon_sigma About This Episode: Peaks in blood glucose (or “blood sugar spikes”) are commonly highlighted as something harmful to health. And, of course, an excessively high blood glucose response to a meal can be problematic, or at least indicate there is a problem. However, elevations in blood glucose after eating are a normal physiological ...
#485: Does Menopause Alter Appetite?
June 20, 2023 05:00 - 45 minutes - 62.6 MBLinks: Go to episode page Receive Danny's weekly emails Subscribe to PREMIUM About This Episode: Menopause is commonly associated with hormonal changes and physical symptoms, such as hot flashes, mood changes, sleep issues, and weight gain. Based on anecdotal reports, another interesting question emerges: what is the potential impact of menopause on appetite? As women undergo this transformative phase, many report fluctuations in their food intake and body weight, raising the quest...
SNP18: What is a Healthy Low-Carb Diet?
June 13, 2023 05:00 - 13 minutes - 19.1 MBLinks: Go to episode page Subscribe to PREMIUM Receive Danny's weekly email Twitter: @NutritionDanny Instagram: @dannylennon_sigma About This Episode: Note: This is a Premium-exclusive episode, so in order to listen to the full episode you’ll need to subscribe to Sigma Nutrition Premium. Low-carbohydrate diets come with a list of reported benefits, and research does show benefit for a number of different outcomes. However, many influencers and advocates of low-carb diets routi...
#484: Is Metabolic Adaptation an Illusion? – Eric Trexler, PhD
June 06, 2023 05:00 - 1 hour - 104 MBLinks: Episode page with resources Subscribe to PREMIUM MASS Research Review About This Episode: Metabolic adaptation refers to the process by which the body adjusts its metabolism in response to changes in energy intake or body mass. This adjustment can occur in both directions, meaning that the body can increase or decrease its energy expenditure in response to changes in energy intake or body weight. When someone consumes fewer calories than their body requires for energy, the b...
#483: What are the Effects of Very High Fiber Intakes?
May 30, 2023 05:00 - 1 hour - 108 MBLinks: Episode page (with links to studies mentioned) Subscribe to PREMIUM Receive Danny's free weekly email About This Episode: The benefits of consuming a higher fiber diet have been consistently demonstrated in nutrition research. Epidemiology clearly shows that higher intakes, compared to lower intakes, leads to a risk reduction for a range of diseases, including cardiovascular disease and colon cancer. And based on this epidemiological evidence, most dietary guidelines recomme...
#482: Carbohydrate Quality & Health – Andrew Reynolds, PhD
May 23, 2023 05:00 - 1 hour - 92.2 MBLinks: Go to episode page (with resources) Subscribe to PREMIUM Receive Danny's weekly email About This Episode: In the last couple of decades, carbohydrates have experienced an increasing amount of negative campaigning. In general, the main argument is that carbohydrates have been viewed as the root cause for obesity, diabetes and several other diseases including heart disease and behavioral disorders. However, there can often be a lack of appreciation that not all carbohydrates are...
Is Personalized Nutrition Superior to General Nutrition Advice? (SNP 17)
May 16, 2023 05:00 - 22 minutes - 32 MBLinks: Go to episode page (with resources) Subscribe to PREMIUM Receive Danny's free weekly email 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 personal...
#481: Why Saturated Fat Really Does Impact Heart Disease Risk
May 09, 2023 05:00 - 1 hour - 124 MBLinks: Go to episode page (with further resources) Subscribe to PREMIUM Get Danny's weekly email, the Sigma Synopsis About This Episode: While it has long been acknowledged that high intakes of saturated fat can increase risk of atherosclerotic cardiovascular disease due to their impact on blood lipids, there are some who question the association between saturated fat and heart disease. Specifically, they may state that the evidence for this association is weak or non-existent, typ...
#480: How Much Fiber Do We Need for Good Health? – Prof. Joanne Slavin
May 02, 2023 05:00 - 1 hour - 96.8 MBLinks: Go to episode page (with resources) Subscribe to Sigma Nutrition PREMIUM Receive Danny's free weekly emails About this Episode: The beneficial impact of a high-fiber diet is something that has been promoted in nutrition for a long period of time. But there remain a variety of interesting questions to researchers, practitioners and the general public alike. How much fiber do we actually need? What are current fiber recommendations based on? What outcomes have the strongest ev...
#479: Blood Glucose, CGM Use, Diabetes Remission & High-Protein for Diabetes – Nicola Guess, PhD, RD
April 25, 2023 05:00 - 50 minutes - 70 MBLinks: Go to episode page Subscribe to PREMIUM Receive Danny's free weekly email Description: Blood glucose responses play a crucial role in maintaining good health, and any abnormalities in glucose regulation can lead to several chronic conditions. Diabetes is one such disease that results from a lack of insulin production or the body’s inability to use insulin effectively, leading to elevated blood glucose levels. There has been debate about what exactly constitues a “healthy” an...
#478: Exposures in Nutrition – Why They’re Crucial to Understand
April 18, 2023 05:00 - 1 hour - 86.1 MBLinks: Go to episode page (w/ resources) Get Danny's weekly emails Subscibe to Premium Description: Understanding the concept of an “exposure” is a critical aspect to nutrition science literacy. The ‘exposure of interest’ refers to the variable or factor that is being studied to determine its relationship with a particular health outcome. For example, in a study examining the relationship between diet and heart disease, the exposure of interest may be a particular nutrient or food ...
SNP16: A Dairy Fat Paradox? – Saturated Fat, Food Matrices & Heart Disease
April 11, 2023 05:00 - 22 minutes - 30.9 MBLinks: Episode page with related links Subscribe to Sigma Nutrition Premium Receive Danny's free weekly email Description: Substantial evidence shows that a high intake of saturated fat in the diet has the potential to significantly raise LDL-C and ApoB-containing lipoproteins in many people, and in turn increase their risk of developing atherosclerotic cardiovascular disease (ASCVD). However, people may raise what seems to some contradictory evidence, or what is sometimes thought ...
#477: Effect of Different Diets on Cholesterol, Lipoproteins and Discordance – Ian Davies, PhD
April 04, 2023 05:00 - 54 minutes - 75.2 MBLinks: Go to episode page (with resources) Subscribe to Sigma Nutrition Premium Receive our free weekly emails Introduction: Discordance between low-density lipoprotein particle (LDL-p) and low-density lipoprotein cholesterol (LDL-C) occurs when the levels of these two biomarkers do not match up as expected. Discordance between Apolipoprotein B (ApoB) and low-density lipoprotein cholesterol (LDL-C) is similar, except rather than counting just LDL particles, ApoB is a measure of the n...
#476: Fructose in Perspective – Dietary Villain or Misunderstood Nutrient?
March 28, 2023 05:00 - 52 minutes - 72.3 MBLinks: Go to episode page (w/ resources) Subscribe to PREMIUM Receive Danny's free weekly email Description: Fructose is a type of sugar that is commonly found in fruits, vegetables, and many processed foods. In recent years, there has been a lot of discussion and debate about the impact of fructose on health, with some claiming that it is a major contributor to obesity, diabetes, and other chronic diseases. However, these claims are often at odds with what the scientific literature ...
#475: Is Food Addiction Real? – Charlotte Hardman, PhD
March 22, 2023 05:00 - 55 minutes - 77.2 MBLinks: Go to episode page Subscribe to Premium Sign-up for our free weekly email: The Sigma Synopsis Description: The idea of food addiction has gained a lot of attention in recent years, as obesity rates continue to rise around the world. Many people struggle with overeating and find it difficult to resist certain foods, leading to a cycle of guilt and shame. The concept of food addiction suggests that there may be a biological explanation for this behavior, and that certain foods m...
SNP15: AMA – Semaglutide, “Carni-nutrients”, Sweating From Caffeine, & More
March 17, 2023 05:00 - 27 minutes - 37.6 MBQuestions Answered in this AMA [00:03:01] Mechanisms that keeps weight stable over time? [00:11:52] Semaglutide: Game-changer? Weight regain? [00:30:42] How to further lower LDL-C? Can I avoid statins? [00:43:52] Glyphosate: A cause for concern in food? [00:48:30] High caffeine intake is making me sweat more. What’s going on? [00:55:16] Should I avoid non-organic meat? [01:00:08] Is there evidence on iron and zinc co-ingestion for anemia of prematurity? [01:03:09] “Carni-nutri...
#474: Glucose Peaks & Variability – Is Lower Better?
March 13, 2023 05:00 - 1 hour - 114 MBLinks: Go to episode page (with links & resources) Subscribe to Sigma Nutrition Premium Receive our free weekly email, The Sigma Synopsis About This Episode: Often claims are made recommending that people should aim to keep peaks in blood glucose low in terms of both magnitude and frequency. And while many claims about blood glucose “spikes” are incorrect or purposefully exaggerated to grab attention, there are some reasonable and interesting hypotheses put forward in relation to b...
#473: Diet & Depression (What Do We Actually Know?) – Nicole Lippman-Barile, PhD
March 07, 2023 05:00 - 1 hour - 100 MBLinks: Episode page (with more links) Subscribe to Premium Introduction Depression is a common disorder and is a leading cause of disability worldwide. Depression results from a complex interaction of social, psychological, and biological factors. Diet has been one area that has been suggested in playing a role; from potential for exacerbating symptoms to being a treatment. And while some associations have been noted, many claims far exceed what (little) evidence exists. Online it ...
#472: Compared To What? – Understanding Food Substitution Analysis & Adjustment Models
February 28, 2023 05:00 - 53 minutes - 73.7 MBLinks: Subscribe to Premium Go to this episode's page (with links) Live event: London - March 18th Receive 'Sigma Synopsis' emails Description: When thinking about the effect of eating or not eating a certain food or nutrient, we can’t consider this in isolation. Meaning, we need to evaluate the impact within the context of what such an inclusion/exclusion does to an individual’s overall diet pattern. Thinking about this concept, the phrase “compared to what?” has been colloquial...
#471: Salt & Bone Health – Is There Cause For Concern?
February 21, 2023 05:00 - 57 minutes - 79.5 MBLinks: Episode page Subscribe to Premium Live Event: London, UK Receive the Sigma Synopsis emails About This Episode: Does sodium lead to calcium losses? Do high-salt diets harm bone health? At what thresholds could there be an impact? Does any of this change our recommendations around salt/sodium intake? Thanks to Sigma Nutrition Premium subscriber Kate Wall for submitting a question in the member’s area that inspired this episode. Kate asks: “Salt can impact calcium excr...
SNP14: Nutrition Coaching Roundtable (Helms, Huschtscha & Baker)
February 14, 2023 05:00 - 9 minutes - 13.8 MBLinks: Subscribe to Premium Episode page Description: Nutritionists, dietitians and other health & fitness professionals face many challenges when attempting to help their clients and in understanding what approaches are best in a given situations. There are often discussions around improving client adherence to dietary recommendations. However, sometimes we need to think deeper about this topic. Is there really just a tool to fix this? Or could the problem be the recommendations...
#470: Melatonin, Meal Timing & Glucose Tolerance
February 07, 2023 05:00 - 1 hour - 98.3 MBLinks: Episode page Subscribe to Premium Live event in London, UK Description: Meal timing has been a popular, and at times controversial, topic of interest in nutrition. Despite much speculation over the years as to potential advantages to specific meal timing or meal frequencies, for many outcomes there seems to be little pragmatically meaningful difference. For example, when accounting for calorie and macronutrient intake, there is little to no effect of meal timing on body compo...
#469: Chrononutrition – New Findings & Updated Views
January 31, 2023 05:00 - 1 hour - 108 MBResearch in the field of ‘chrononutrition’ has continued to grow in the past couple of years, with some important studies being published in recent times. Chrononutrition is a research area that looks at the relationship between temporal (time-related) eating patterns, circadian rhythms, and metabolic health. While past podcast episodes have covered various aspects of chrononutrition, the latest research has added important pieces to the puzzle and has lead to both Alan and Danny updated t...
#468: High Sugar Intakes Without Excess Calories: Harmful or Benign?
January 24, 2023 05:00 - 1 hour - 130 MBThere is almost universal agreement that excess added sugar in the diet is detrimental to health. However, much of this negative health impact clearly relates to the ability of high sugar intakes to drive excess calorie intake and fat accumulation, which cause health issues. But what about situtaions of where there is not a calorie surplus (hypercaloric diet) or weight gain? Some people claim that sugar is inherently damaging. While others push back and claim sugar is only a problem in t...
SNP13: Intuitive Eating Debate – with Jackson Peos, PhD
January 17, 2023 05:00 - 12 minutes - 17.5 MBThis episode brings you a “debate” between Danny Lennon and Dr. Jackson Peos on the utility of intuitive eating. Specifcally, they make a case for and against, respectively, for the position: “Intuitive eating can be recommended eating approach for those with fitness and/or physique goals”. This episode is a Premium-exclusive episode, so you’ll need to be a Premium subscriber to listen to the full discussion but you can hear a preview here. Links: Subscribe to Premium Live event: Lond...
#467: Iron Issues in Athletes – Prof. Pete Peeling
January 10, 2023 05:00 - 50 minutes - 70.1 MBIron is an important nutrient for athletes, given that it is used for oxygen transport and energy production. However, research on athletes often reports a relatively high prevalence of iron deficiency. Common symptoms of low iron status like lethargy, fatigue and negative mood states are naturally of concern to athletes. But there is also the potential for low iron to directly impact work capacity. Therefore, maintaining adequate iron status (and knowing the signs of iron deficiency) is cr...
#466: Iron Absorption from Foods & Supplements – Prof. Paul Sharp
January 03, 2023 05:00 - 1 hour - 84.1 MBIron deficiency is a prevalent issue. Worldwide, it is the leading nutritional deficiency. And although there is lower prevalence in high-income countries, a significant number of people are still affected. Iron deficiency may be a result of too little iron coming in (i.e., via diet choices or low absorption), or from excess losses (e.g., commonly from blood losses). Understanding how these can impact iron status is crucial for both accurate diagnosis and treatment. In relation to dietar...
#465: Diagnosing & Treating Iron Deficiency & Excess – Austin Baraki, MD
December 27, 2022 05:00 - 1 hour - 110 MBIron is involved in a whole range of biological processes and a consistent supply of iron is crucial for cellular turnover. But despite iron being an essential mineral for human function, it is highly toxic to cells and tissues if present at high levels. Therefore an intricate and tight regulation of iron is necessary. If iron status gets too low, iron-deficiency anaemia can result. In such situations there is a shortfall in hemoglobin production, which leads to a range of issues in the bo...
#464: Do Sugar Taxes Work?: Evidence on Potential Policies - Kathryn Backholer, PhD
December 20, 2022 05:00 - 44 minutes - 62 MBThe current food environment is continuously highlighted as a problem for public health. And so there is a strong focus in both public policy and research circles to determine which strategies could lead to a healthier food environment. One potential strategy that is widely recommended by public health experts is the use of fiscal/taxation policies to decrease the consumption of unhealthy foods and beverages. By making unhealthy foods and beverages relatively more expensive than healthy f...
SNP12: The Big Breakfast Study
December 13, 2022 05:00 - 30 minutes - 42.1 MBIn October 2022, Ruddick-Collins et al. published results of an RCT looking at the impact of different calorie distributions across the day. This study was from the ‘Big Breakfast Study’ project, primarily from the University of Aberdeen. In this study, 30 subjects underwent two 4-week calorie-restricted diets that were matched for calories. One diet was “morning-loaded”, meaning that daily calories were distributed as 45% at breakfast, 35% at lunch, and 20% at dinner. The other was “eveni...
#463: Do Vegan Diets Cause Depression?
December 06, 2022 05:00 - 1 hour - 140 MBIn this episode, the Sigma team explores the question: “Do vegan diets increase the risk of depression?” This is a question that emerges from a few different places. First, it’s common to hear such a claim from proponents of largely animal-based diets. Some reference is often made about how vegan diets can, at best, worsen symptoms or, at worst, even cause depression. Or conversely, they may state that moving away from a plant-based diet will improve mental health outcomes, including depre...
#462: Gyorgy Scrinis, PhD – Ultra-Processed Foods, Nutritionism and Current Food Systems
November 29, 2022 05:00 - 1 hour - 79 MBLinks: Show notes page (incl. study links & related episodes) Subscribe to Sigma Nutrition Premium Live event in London, UK About this episode: Over the past decade, the increasing uptake and acceptance of the Nova food processing classification system has placed focus on one of the categories in Nova; ultra-processed foods (UPFs). Ultra-processed foods (UPFs) are products created from deconstructed (and recombined) food components, usually with the goal of creating a highly palatab...
#461: Prof. Emma Boyland – How Food Marketing Impacts Eating Behaviour
November 22, 2022 05:00 - 1 hour - 83.7 MBResearch has shown that food marketing strongly impacts children’s eating behaviour. Marketing influences food purchase requests, purchases, and preferences. And the evidence of a relationship between food marketing exposure and obesity meets epidemiological criteria for causality. The evidence suggests that the impact of food marketing is a function of both exposure to the marketing message and its persuasive power. What does the current evidence tell us about the exact effect of market...
SNP11: The Death of Domain Expertise
November 15, 2022 05:00 - 33 minutes - 46.2 MBNever before has there been greater access to information about nutrition and health. But never before has there been such a low barrier to being seen as an “expert”. There are large numbers of people getting information from, and basing their health decisions on, people who don’t have direct expertise in the field in which they are talking about. Moreover, some promote the lack of domain expertise as a feature, not a bug. They claim that those that were conventionally seen as domain exper...
#460: Dr. Priya Sumithran – Body Fat Regulation, Pros & Cons of Weight Loss Interventions, and GLP-1 Receptor Agonists
November 08, 2022 05:00 - 56 minutes - 77.6 MBObesity increases the risk of a range of chronic diseases and negative health outcomes. And trials where a sufficient amount of weight loss is achieved show health improvements. However, despite the “straightforward” nature of causing weight loss through a hypocaloric diet, it is clear that most people who lose weight will regain some or all of the weight. This is a result of both the physiologic control of intake and expenditure (i.e. homeostatic regulation by the body to avoid staying at...
#459: Nicky Keay, MB BChir – Hormones & Healthspan: The Endocrine System Across the Life Course
November 01, 2022 05:00 - 51 minutes - 71.3 MBThe endocrine system plays a central role in growth, development, metabolism, reproduction, and physical well-being throughout life. Hormones interact in complex networks, orchestrating a range of critical functions. Over the life course, we experience various changes in hormone levels, fluctuations, patterns, and actions. Additionally, lifestyle factors and disease processes can impact the levels and functions of hormones. In this episode, Dr. Nicky Keay, a medical doctor with expertise i...
What Are Stable Isotopes? How Are Tracers Used in Nutrition Research? (Preview)
October 25, 2022 05:00 - 12 minutes - 17.4 MBStable isotopes have been used as tracers in human nutritional studies for many years. But what are they? Why do we use ‘tracers’ in nutrition studies? And what are some practical examples? A chemical element can have different forms or ‘isotopes.’ These different isotopes have the same atomic number and position in the periodic table but have different atomic masses and physical properties. An isotope that is not radioactive is said to be ‘stable’. In physiology and metabolism research,...
#458: How Foods Impact Satiety, Hunger & Appetite
October 18, 2022 05:00 - 1 hour - 132 MBGiven the negative consequences of consistent overconsumption of food (leading to a caloric surplus), having a dietary intake that is of appropriate calorie intake is an important aspect of long-term health. Therefore, thinking about which foods and diets can help promote appropriate satiety to keep calorie intake in check is a key focus for many researchers and practitioners. There is a complex system of human appetite control. This appetite system influences food consumption and associat...
#457: Austin Robinson, PhD – Salt Sensitive vs Salt Resistant, Impacts of Sodium on Health, & Racial Differences in Risk
October 11, 2022 05:00 - 1 hour - 96 MBHypertension (elevated blood pressure) is a condition that significantly increases the risk of several diseases and is a major cause of premature death worldwide. In the US, recent estimates suggest that about half of the adult population has hypertension. At a population level, high sodium intake is one of the main dietary risk factors. All population health guidelines recommend keeping sodium intake below certain levels. While, on average, blood pressure correlates with sodium intake, th...
#456: Prof. Glenn McConell – Glucose Uptake During Exercise & Muscle Insulin Sensitivity
October 04, 2022 05:00 - 1 hour - 87.4 MBExercise improves metabolic control both via increasing muscle glucose uptake during muscle contractions by insulin-independent mechanisms and by increasing skeletal muscle insulin sensitivity after physical activity. A reduction in skeletal muscle insulin sensitivity is an early event in the development of not only prediabetes, metabolic syndrome, and type 2 diabetes but is also associated with other conditions such as cardiovascular disease and some cancers. One of the researchers that h...
#455: Jill Joyce, PhD – Improving the Diets of Tactical Populations
September 27, 2022 05:00 - 47 minutes - 65.5 MBThe term ‘tactical populations’ has been applied to those working in law enforcement, fire, first responders, and military. In addition to the importance of their work, the work they do itself presents some challenges for health and nutrition. Despite the fact that such individuals make up a significant number of the population and their work plays a crucial role in society, there is currently very little research on fire and law enforcement nutrition. Most research is on the prevalence of...
SNP9: AMA – Blood Pressure, LDL Lowering, PCOS & More!
September 20, 2022 05:00 - 15 minutes - 21.1 MBIn this Premium-exclusive ‘Ask Me Anything’ episode, Alan & Danny answer a range of listener questions. Topics include obesity rates, lowering blood pressure, cholesterol drugs, PCOS, and what issues they have changed their minds on. See the full list of questions below. [02.37] Do you feel that there is hope (or an effective way forward) for obesity rates to come down? Based on your response, why/why not? [11.28] In this field, it seems like so many of us have had positions we’ve held...
PRE #9: AMA – Blood Pressure, LDL Lowering, PCOS & More!
September 20, 2022 05:00 - 15 minutes - 21.1 MBIn this Premium-exclusive ‘Ask Me Anything’ episode, Alan & Danny answer a range of listener questions. Topics include obesity rates, lowering blood pressure, cholesterol drugs, PCOS, and what issues they have changed their minds on. See the full list of questions below. [02.37] Do you feel that there is hope (or an effective way forward) for obesity rates to come down? Based on your response, why/why not? [11.28] In this field, it seems like so many of us have had positions we’ve held...
#454: Eric Helms, PhD – Plant or Animal Protein: Rethinking Protein & Muscle
September 13, 2022 05:00 - 1 hour - 118 MBWhen it comes to eating to promote muscle hypertrophy, muscle repair/recovery and maintenance of mass and function, protein has been an obvious focus. Indeed muscle mass and quality are dependent on the continuous remodeling of skeletal muscle proteins. This is related to the amount of muscle protein balance, i.e. the net difference between muscle protein synthesis (MPS) and muscle protein breakdown (MPB). Because of this, MPS has long been used as a proxy measure for muscle repair and/or gr...
#453: Nick Gant, PhD – Cognitive Performance: Impact of Caffeine, Nicotine & Creatine (Rebroadcast)
September 06, 2022 05:00 - 1 hour - 99.4 MBThe brain plays a central role in both physical and psychological function and performance. The brain also has a very high energy demand. In addition, fatiguing conditions can cause impairment of cognitive performance. One area of research in neurometabolism related to the potential use of nutrients on improving cognitive function, as well as “rescuing” the fatigue-related declines in performance. Nick Gant is Director of the Exercise Neurometabolism Laboratory at the University of Auckl...
#452: Stuart Phillips, PhD - Bacterially Synthesized Whey, Plant vs. Animal Proteins, Muscle & Extended Fasts, & Much More
August 30, 2022 05:00 - 55 minutes - 76.7 MBThis episode was oringally published as one of our “Expert – ask me anything” (AMA) episodes, which we published for Premium prescribers. In such bonus episodes, we collect questions from Premium subscribers and ask them direct to a world-class expert and past podcast guest. If you’re interested in subscribing to Sigma Nutrition Premium, then check all the details here. In this episode Prof. Stu Phillips takes questions about synethized whey protein, plant proteins, post-exercise MPS, an...
#451: Potassium & Blood Pressure: Influence of Sex & Sodium
August 23, 2022 05:00 - 55 minutes - 76.8 MBIt has been consistently shown in research that elevated dietary sodium consumption is associated with high blood pressure and an increased risk of cardiovascular disease. In addition, low levels of dietary potassium intake are associated with these same risks. However, there is some debate on how to characterize these relationships. In a study published in European Heart Journal in July 2022, using data from the EPIC-Norfolk study, researchers attempted to answer whether the associations ...
#450: Megan Rossi, PhD, RD – Diet For a Healthy Gut: Diversity, Fiber Types & Gut Health Pseudoscience
August 16, 2022 05:00 - 53 minutes - 74.5 MBWith the advances in understanding the importance of the gut (including its bacterial contents) for human health, much interest and attention has been placed on how to eat to promote positive ‘gut health’. This has led to many exciting research questions and labs doing fascinating work. However, on the opposite side, it has led to a spike in opportunistic quacks to jump on the wave of enthusiasm and promote diets, supplements, testing kits and products that don’t reflect the current evidenc...