Subscribe to Sigma Nutrition Premium It's never been more popular to be seen as "evidence-based" as a fitness professional. And indeed evidence-based practice has been seen as the best way to arrive at coaching decisions. But is "evidence-based practice" actually what fitness professionals are doing? Is it even attainable for most coaches? Does it create a burden on them? Does it even matter if you're actually reading reserach or not? What makes for a competent personal trainer? In this episode,...
Feb 22, 2022•1 hr 3 min
Subscribe to Sigma Nutrition Premium Jaebien Rosario is currently a graduate level student in public health at East Stroudsburg University. He has degrees in psychology and philosophy, and has previously worked as a personal trainer and nutrition coach. His interest include science denialism, vaccine hesitancy, the philosophy of science, the sociology of science, and meta science. His current research projects include research proposals for covid-19 and vitamin D trials, research conducted perta...
Feb 15, 2022•54 min
Subscribe to Sigma Nutrition Premium Prof. Anna Krylov is a Professor of Chemistry at the University of Southern California (USC), working in the field of theoretical and computational quantum chemistry. She has a M.Sc. in Chemistry from Moscow State University (1990) and a PhD from The Hebrew University of Jerusalem, Israel (1996). Krylov is active in the promotion of gender equality in STEM fields, especially in theoretical chemistry. She created the web directory 'Women in Theoretical and Com...
Feb 08, 2022•1 hr
In this episode Alan and Danny discuss the role of cholesterol in the body and claims that are made suggesting low levels of blood cholesterol are harmful to health. Starting with the premise that cholesterol is an important molecule in the body and plays a role in many processes, discussed are two related claims: we should avoid low cholesterol levels as it can harm our health elevated levels of cholesterol may actually be protective against disease or mortality. The episode also critiques clai...
Feb 01, 2022•1 hr 31 min
Zoya Huschtscha, PhD is a researcher and assistant lecturer at Monash University (Australia), in the Department of Nutrition and Dietetics. She completed her PhD at the same institution, where her research focused on interventions to prevent and treat sarcopenia; i.e. the loss of muscle function and mass, typically with age. Zoya also has a Masters of Dietetics. In addition to her academic work, she works in private practice as a sports dietitian. Show notes available at sigmanutrition.com/episo...
Jan 25, 2022•36 min
In this episode the Sigma team discuss the research looking at psychobiotics, i.e. probiotics that have health impacts on those with pyschiatric disorders or symptoms. They discuss the origins of the research, the gut-brain axis, mechanisms by which gut microbiota could impact mood, and then the human trials to date that have examined probiotics' effects on mood, anxiety, depression, bipolar disorder and other outcomes. Show notes can be found at sigmanutrition.com/episode422/ and the Sigma Stat...
Jan 18, 2022•1 hr 4 min
Dr. Brendon Stubbs, PhD, is a Senior Clinical Lecturer and researcher at King's College London, conducting research in physical activity & mental health, the mind-body interface, and meta-research. He has published over 600 academic papers in several leading journals across multiple scientific fields. He has informed policy guidelines in the UK, Europe and the World Health Organization. Dr. Stubbs is also a clinical physiotherapist, being Head of Physiotherapy at the South London and Maudsle...
Jan 11, 2022•1 hr 1 min
Kevin Boehnke is a researcher at the University of Michigan, in the Chronic Pain and Fatigue Research Center. His current research focuses on therapeutic applications of illicit or semi-licit substances (cannabis, psychedelics). His goal is to rigorously assess appropriate use of these substances and to help address the public health harms caused by their criminalization. Carrie Cuttler is an Assistant Professor at Washington State University. Her research at the Health and Cognition Laboratory ...
Jan 04, 2022•1 hr 21 min
Dr. Nathan Bryan, PhD is an Adjunct Assistant Professor at Baylor College of Medicine. Dr. Bryan has been involved in nitric oxide research for the past 18 years and has made many seminal discoveries in the field. He was the first to demonstrate and discover an endocrine function of nitric oxide via the formation of S-nitrosoglutathione and inorganic nitrite. Dr. Bryan obtained his doctoral degree from Louisiana State University School of Medicine in Shreveport where he was the recipient of the ...
Dec 30, 2021•39 min
Click here to subscribe to Sigma Nutrition Premium In this episode Danny and Alan discuss the debate around whether a direct source of the long-chain omega-3 fatty acid DHA should be recommended. Many people do not consume the marine foods (primarily fatty fish) that contain DHA, and higher DHA intakes, DHA status, and omega-3 indices are predictive of certain health outcomes. But the essential omega-3 fatty acid alpha-linolenic acid (ALA) can be consumed from plant sources. So do those who do n...
Dec 21, 2021•1 hr 18 min
Dr. Austin Baraki joins Danny and Alan to critically evaluate the assumption that blood levels of a nutrient directly tell us about overall nutritional status. With many people getting blood tests done outside of clinical settings, there is significant risk of misinterpretation of what these measures mean. In this episode we discuss measures of calcium, sodium, vitamin D and others as examples of where misinterpretation and misunderstanding can happen. Show notes can be found at sigmanutrition.c...
Dec 14, 2021•1 hr 3 min
Dr. David Nunan, PhD is a Lecturer and Senior Research Fellow in the Centre for Evidence-Based Medicine at the University of Oxford. There, he is the Director of the Postgraduate Certificate in 'Teaching Evidence-Based Health Care' and the lead tutor for the internationally-renowned 'Teaching Evidence-Based Medicine' course. He is a principal investigator with research interests in prevention and treatment of lifestyle-related conditions, improving the understanding and use of research evidence,...
Dec 07, 2021•49 min
Bruce Neal is Executive Director at The George Institute for Global Health Australia; and Professor of Medicine, UNSW Sydney. Prof Neal is a UK-trained physician who has 25 years’ experience in clinical, epidemiological, and public health research with a focus on heart disease, stroke and diabetes. Bruce has a longstanding interest in high blood pressure and diabetes and the potential for both clinical interventions and changes in the food supply to deliver health gains. His work has been charac...
Nov 30, 2021•46 min
In this episode, the Sigma team discuss the claim that machine learning and data science may overtake traditional research methods in nutrition. They discuss how machine learning could solve some current limitations of traditional methods, studies on its use so far, potential applications in future trials, and potential limitations or problems with the increased use of data science (including ethical and societal concerns). They also ponder on how tech is currently being used (and abused) in rel...
Nov 24, 2021•1 hr 44 min
" data-userid="424351203778215936" data-orgid= "425311536639447040">Anthony Fardet, PhD is a nutrition science researcher in the Human Nutrition Unit at Université Clermont Auvergne, France. His work has focused on a number of related areas; the consequences of the reductionist and holistic approaches applied to nutrition research, the relevance of a new classification of foods based on their degree of processing, and the role of the complex structure of the food in its health potential ("mat...
Nov 16, 2021•54 min
Dr. Eirini Dimidi of King’s College London discusses the research on diet in chronic constipation and functional bowel disorders. Dr. Dimidi is a Lecturer in Nutritional Sciences and a Registered Dietitian. In 2016, she was appointed as a Research Associate at King’s College London, where she undertook several research projects on the impact of nutritional interventions in gut function and dysfunction. Dr. Dimidi is undertaking research on nutrition-based interventions, including fibre, plant fo...
Nov 09, 2021•48 min
Click here to subscribe to Sigma Nutrition Premium In this episode Alan and Danny discuss the role of nutrition in bone health. They cover the importance of bone health, bone disorders such as osteoporosis, how nutrients play a role in bone remodelling, and the evidence of dietary and supplementation trials on bone health outcomes. You can find the show notes, with links to all the reference studies, at https://sigmanutrition.com/episode411/ Click here to subscribe to Sigma Nutrition Premium...
Nov 02, 2021•1 hr 30 min
In this episode Alan and Danny answer a variety of questions sent in from listeners. Questions: [1:10] Gabriel - Is there any benefit to including SFAs and cholesterol in low quantities in our diets for healthspan? [10:42] Luis Arrondo - Can I do 3 rather than 4 meals or more for protein absorption by increasing grams of protein? How many grams of protein can be absorbed at one sitting. Does taking in protein at night help more absorption of protein? If so, something slower, like milk over whey?...
Oct 26, 2021•1 hr 22 min
In this episode nutritionist Simon Hill discusses the barriers to eating a healthy diet, steps that can be taken to shift both individuals and the general population to a healthier dietary patten, and a number of other topics. Find the show notes at sigmanutrition.com/episode409/
Oct 19, 2021•54 min
Dr. Mario Kratz is a clinical researcher in the areas of nutrition, obesity, and cardiometabolic disease, with more than 20 years of experience running clinical studies in a variety of populations. He is a former research associate professor at the University of Washington in the departments of Medicine and Epidemiology. And is also formerly an Associate Professor at the Fred Hutchinson Cancer Research Center in Washington state. You can find the show notes at sigmanutrition.com/episode408/ or y...
Oct 12, 2021•1 hr 12 min
In this episode we discuss the potential impact of dietary polyphenols on cardiovascular disease risk; including impacts on blood pressure, flow-mediated dilation, and other related outcomes. We talk about some potential mechanisms and then several specific randomized, controlled trials. You can find the show notes at sigmanutrition.com/episode407/ and you can support the podcast on patreon.com/sigmanutrition
Oct 05, 2021•53 min
In this episode we discuss the potential impact of dietary polyphenols on cognitive health; including cogitnitve funciton, memory, and risk of dementia and Alzeimher's. We talk about some potential mechanisms, cohort studies, and then direct controlled trials. You can find the show notes at sigmanutrition.com/episode406/ and/or support the podcast at patreon.com/sigmanutrition
Sep 28, 2021•1 hr 30 min
Dr Adrian Brown is a NIHR Lecturer and Research Fellow in the Centre of Obesity Research at University College London. He is also a senior Specialist Weight Management and Bariatric dietitian with over 15 years of clinical experience and a PhD in Medicine from Imperial College London. His research interests centre around obesity, type 2 diabetes, bariatric surgery, weight stigma and the use of formula-based diets in different patient populations. He is an Honorary Academic for Public Health Engl...
Sep 21, 2021•1 hr 3 min
Prof. Marion Hetherington is Professor of Biopsychology at University of Leeds, where her research is focused on the psychology of appetite across the lifespan. She has previously been at Johns Hopkins, the NIH, the University of Dundee, University of Liverpool and Glasgow Caledonian University, before taking up her role in Leeds in 2008, where she works within the Human Appetite Research Unit. You can find the show notes to this episode at sigmanutrition.com/episode404/ and you can support the ...
Sep 14, 2021•46 min
Prof. David Jacobs, PhD is Professor of Public Health, in the Division of Epidemiology and Community Health, at the University of Minnesota. He has published highly inflential work in nutritional epidemiology and health epidemiolgy for decades. A number of his papers have brought up crucially important ideas about how to do good nutrition science. Specifically, he has talked about think of whole diet or foods as the exposure of interest, rather than individual nutrients. Essentially warning agai...
Sep 07, 2021•54 min
Prof. Leanne Redman is a Professor of Reproductive Endocrinology & Women’s Health, based at the Pennington Biomedical Research Center. As the director of the Reproductive Endocrinology and Women’s Health Laboratory, she is focused on understanding the intergenerational transmission of obesity. She has published on maternal diet, preeclampsia, and gestational diabetes, amoung other issues. She and her colleagues are currently conducting a rigorous trial to determine the effects of a 6-month g...
Aug 31, 2021•53 min
We take a look at three more "quacks" who spread misinformation; Dr. Michael Greger (01:21), Eric Berg (36:26), and Dr. Paul Saladino (55:18). We give reference to some specific examples. Show notes available at sigmanutrition.com/episode401/ If you wish to support the podcast you can do so via patreon.com/sigmanutrition/
Aug 24, 2021•1 hr 34 min
Links: Go to episode page Receive Danny's free emails Subscribe to Sigma Nutrition Premium About This Episode: To celebrate our 400th episode, we take a look at two "quacks" who spread misinformation; Dr. Aseem Malhotra and Dr. James DiNicolantonio. We give reference to some specific examples....
Aug 17, 2021•1 hr 29 min
James Betts is Professor of Metabolic Physiology at the University of Bath, where he is Co-Director of the Centre for Nutrition, Exercise & Metabolism. His research employs randomised controlled trials to study the effects of nutrition on metabolic regulation. His group recently published a trial aiming to separate out the effects of fasting from those of calorie restriction. Show notes at sigmanutrition.com/episode399/
Aug 10, 2021•45 min
Carole Hooven, PhD, is lecturer and codirector of undergraduate studies in the Department of Human Evolutionary Biology at Harvard University. She earned her PhD at Harvard, studying behavioral endocrinology and evolution of sex differences in humans (physiology, behavior and cognition). She has recently written a book on how testosterone influences behaviour and explains many sex differences. The book is titled 'T: The Story of Testosterone, the Hormone that Dominates and Divides Us'. Show note...
Aug 03, 2021•47 min
