#602: Avoidant/Restrictive Food Intake Disorder (ARFID) – Megan Hellner, DrPH, RD & Katherine Hill, MD
In a recent Sigma Nutrition podcast, Megan Hellner, PhD, RD, and Dr. Katherine Hill dissected Avoidant/Restrictive Food Intake Disorder (ARFID), emphasizing its distinction from typical picky eating and its occurrence across all body sizes. They highlighted how ARFID often goes unnoticed in routine care, especially among athletes where it can trigger low‑energy availability and RED‑S‑like symptoms. The discussion outlined evidence‑based assessment tools and a multidisciplinary treatment pathway that blends nutrition rehabilitation, exposure therapy, and long‑term maintenance. Finally, they called for broader research and earlier screening to close diagnostic gaps.
#601: Gallstones & Gallbladder Conditions: Impact of Diet – Angela Madden, PhD RD
In a recent interview, Dr. Angela Madden, PhD RD, dissected the evidence behind dietary advice for gallstones and gallbladder disease. She highlighted that the common recommendation to avoid fatty foods for symptom relief rests on limited direct research, especially when...
#599: Does Unprocessed Red Meat Increase Diabetes Risk? – Gil Carvalho, PhD MD & Mario Kratz, PhD
In a recent podcast, Dr. Mario Kratz and Dr. Gil Carvalho dissect the contentious evidence linking unprocessed red meat to type 2 diabetes and cardiovascular disease. Observational cohorts consistently show an elevated risk, yet short‑term randomized controlled trials report largely neutral...
#598: How Do Exercise & Diet Interact to Improve Glycaemic Control? – Jenna Gillen, PhD
The episode with Dr. Jenna Gillen explores how exercise timing and nutrition jointly shape post‑prandial glycaemic control. It explains that muscle contractions during brief, low‑volume interval sessions can blunt glucose excursions and, over time, enhance insulin sensitivity. The discussion highlights...
#597: Behavioral Psychology in Diet & Health Counselling – David Creel, PhD, RD
David Creel, PhD, RD, a clinical psychologist and dietitian at the Cleveland Clinic, emphasizes that lasting weight‑loss hinges on behavioral psychology rather than isolated diet or exercise prescriptions. He outlines a framework that blends collaborative communication, self‑monitoring, skill‑building, and relapse‑prevention...
#596: Why Do Omega-3 Trials Show Mixed Results?
Omega‑3 supplementation trials produce mixed results due to differences in dose, population risk, and chosen endpoints. High‑dose EPA/DHA studies in secondary‑prevention cohorts with elevated triglycerides, such as REDUCE‑IT, show significant cardiovascular benefit, whereas lower‑dose primary‑prevention trials like VITAL and ASCEND...