The Role of Genetics in Obesity

In this video segment adapted from NOVA scienceNOW, learn about obesity and how both genetics and behavior play a role in its development. Obesity researchers Sadaf Forooqi, Stephen O'Rahilly, and Jeffrey Friedman discuss the physiological basis of appetite regulation, including the roles of the hormone leptin, which suppresses hunger, and the melanocortin 4-receptor, or MC4R, which processes the message to control appetite. The relative importance of a healthy diet and exercise is also emphasized. This video is available in both English and Spanish audio, along with corresponding closed captions. CREDITS: https://www.pbslearningmedia.org/credits/oer08.sci.life.gen.obesity/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-section-3c-of-terms-of-use-download-and-share/

LicenseCustom License

More videos by this producer

Mirror Neurons

This video segment, adapted from NOVA scienceNow, introduces the latest research on a system of neurons that plays a part in how people relate to each other. CREDITS: https://www.pbslearningmedia.org/credits/hew06.sci.life.reg.mirrorneurons/ LICENSE: https://www.pbslearningmedia.org/help/full-lice

NOVA scienceNOW: Franklin Chang-Díaz: Rocket Scientist

In this video segment adapted from NOVA scienceNOW, meet Franklin Chang-Díaz, an astronaut and scientist. Learn how he has been interested in rockets and space travel since he was a child in Costa Rica, and how he immigrated to the United States to pursue his dream of becoming an astronaut. Hear how

The Science Behind Appetite

This video segment, adapted from NOVA, documents a ballerina's experience with a potentially deadly eating disorder: anorexia nervosa. Research suggests that a brain chemical called serotonin plays a prominent role in regulating appetite—a key factor in eating disorders. The disruption of serotonin