How Does a Gastric Bypass Work? | Earth Science

Gastric bypasses reduce the size of the stomach - but can it also change your behaviour and appetite?

Best of Earth Science: http://bit.ly/EarthLabOriginals
Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos
The Doctors Are In The House: http://bit.ly/TheDoctorsAreInTheHouse

Horizon: The Truth About Fat

Surgeon Gabriel Weston discovers the surprising truth about why so many people are piling on the pounds, and how to fight the fat epidemic. She discovers the hidden battles of hormones that control people's appetites, and sees the latest surgery that fundamentally changes what a patient wants to eat by altering how their brains work. Gabriel is shocked to find out that when it comes to being overweight, it is not always your fault you are fat.


Welcome to BBC Earth Science! Here we answer all your curious questions about science in the world around you (and further afield too). If there’s a question you have that we haven’t yet answered let us know in the comments on any of our videos and it could be answered by one of our Earth Science experts.