All of the calorie counts you see on food today are wrong. Obesity researcher Giles Yeo shows why calories are not created equal. Giles' newest book "Why Calories Don't Count" is available now: https://geni.us/rjch7M Watch the Q&A: https://www.youtube.com/watch?v=S5F0x1HZSBs Giles Yeo explores what your environment has to do with your bodyweight, the science behind why popular diets succeed, at least in the short term, and why they ultimately fail. Dr Giles Yeo is a geneticist with over 20 years’ experience dedicated to researching the genetics of obesity. He obtained his PhD from the University of Cambridge and assisted the ground-breaking research that uncovered key pathways in how the brain controls food intake. His current research focuses on understanding how these pathways differ from person to person, and the influence of genetics in our relationship with food and eating habits. He is based at MRC Metabolic Diseases Unit, where he is Principal Research Associate, and is a fellow and graduate tutor at Wolfson College. Giles also moonlights as a science presenter for the BBC. He lives in Cambridge with his family. --- A very special thank you to our Patreon supporters who help make these videos happen, especially: Anthony Powers, Ben Wynne-Simmons, Ivo Danihelka, Hamza, Paulina Barren, Metzger, Kevin Winoto, Jonathan Killin, János Fekete, Mehdi Razavi, Mark Barden, Taylor Hornby, Rasiel Suarez, Stephan Giersche, William 'Billy' Robillard, Scott Edwardsen, Jeffrey Schweitzer, Gou Ranon, Christina Baum, Frances Dunne, jonas.app, Tim Karr, Adam Leos, Michelle J. Zamarron, Andrew Downing, Fairleigh McGill, Alan Latteri, David Crowner, Matt Townsend, Anonymous, Roger Shaw, Robert Reinecke, Paul Brown, Lasse T. Stendan, David Schick, Joe Godenzi, Dave Ostler, Osian Gwyn Williams, David Lindo, Roger Baker, Greg Nagel, and Rebecca Pan. --- Thumbnail photo by Pablo Merchán Montes on Unsplash Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Ri is on Patreon: https://www.patreon.com/TheRoyalInstitution and Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy Subscribe for the latest science videos: http://bit.ly/RiNewsletter Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.