No, it was probably the incredible advances in everyday automation combined with massive increases in food availability. Survival is not nearly as physically demanding today as it was in the middle of last century.
It's also a matter of making foods more addictive to increase sales. And creating marketing to do the same thing. And then creating food deserts, etc.
It's also a matter of making foods more addictive to increase sales. And creating marketing to do the same thing. And then creating food deserts, etc.