When the science of weight points straight to your DNA.
This Bright Now episode examines how genetics shape body weight, from appetite and metabolism to the inherited patterns behind thinness and obesity. Drawing on major research from the UK, it challenges familiar assumptions about willpower and reveals why some bodies respond differently to the same habits. Sign up to watch a sharper, more compassionate look at one of health's most personal questions.
- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Frequently asked questions
Yes. Every plan unlocks the full library — including all Curiosity Originals like Skinny Genes — in up to 4K, ad-free, on all your devices.
Skinny Genes is a Curiosity Original, exclusive to Curiosity Stream.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.