*The information in this podcast is intended for Healthcare Practitioners.In this episode, Nathan speaks with noted researcher, science consultant, and science communicator Stephan Guyenet. They discuss contributors to weight gain and management, including genetic influences and ultra-processed foods, as well as the new antidiabetic and weight management drug, semaglutide, a GLP-1 receptor agonist.Stephan Guyenet has a PhD in neuroscience at the University of Washington and spends his time in the neuroscience research world studying neurodegenerative disease and the neuroscience of body fatness. His publications in scientific journals have been cited more than 3,600 times and his book, The Hungry Brain, was named one of the best books of the year by Publishers Weekly and called “essential” by the New York Times Book Review. Among other feats, he is the founder and director of Red Pen Reviews, which publishes informative, consistent, and unbiased popular health and nutrition book reviews available. HighlightsUpdates in the science of body weight (4:50)The genetic contribution to body fatness (13:00)About ultra-processed foods and why they are fattening (22:00)A brief history of the pharmaceutical management of obesity (45:00)About semaglutide (53:00)Red Pen Reviews (1:18:00)Useful LinksStephan Guyenet’s website (http://www.stephanguyenet.com/)Stephan Guyenet’s book, The Hungry Brain (https://www.amazon.com.au/Hungry-Brain-Outsmarting-Instincts-Overeat-ebook/dp/B01LWHZSX2)Red Pen Reviews (https://www.redpenreviews.org/about-us/)