Plot: The world is affected by an obesity epidemic, but why is it that not everyone is succumbing? Medical science has been obsessed with this subject and is coming up with some unexpected answers. As it turns out, it is not all about exercise and diet

Horizon - Season 46 - Why Are Thin People Not Fat? (Episode 1)
Episode Aired On:
Monday, January 26 2009
16 years ago
Monday, January 26 2009
16 years ago
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Episode 2