Uploaded April 2026 | Updated September 2026, 3 weeks ago

---

All of the calorie counts you see on food today are wrong. Obesity researcher Giles Yeo shows why calories are not created equal.

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.

Join this channel to get access to perks:
youtube.com/channel/UCYeF244yNGuFefuFKqxIAXw/join

Subscribe for regular science videos: bit.ly/RiSubscRibe

The Ri is on Twitter: twitter.com/ri_science
and Facebook: facebook.com/royalinstitution
and TikTok: tiktok.com/@ri_science
Listen to the Ri podcast: podcasters.spotify.com/pod/show/ri-science-podcast
Donate to the RI and help us bring you more lectures: rigb.org/support-us/donate-ri
Our editorial policy: rigb.org/editing-ri-talks-and-moderating-comments
Subscribe for the latest science videos: 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.

#obesity #genetics #dogenesmakeyoufat #whydoyougetfat #geneticscience #sciencelecture #sciencetalk #biology #biologytalk #biologylecture #thebody