Professor Jimmy Bell in BBC’s The Men Who Made Us Fat (~6:50):
We’re cavemen. We moved from a cave into the supermarket. And there’s all these delicious things that I want to eat. And some of us restrain ourselves from doing it, other people find it very difficult.
Genetically we haven’t changed but our environment, our access to cheap food has changed. We’re being bombarded all day every day by the food industry to consume more and more food.
That’s their job … make money making us fat.