>Clearly 20-30 years is not enough for genetics to play in Unless it's some sort of epigenetic factors changing genetic expression? It's a possibility conside

>Clearly 20-30 years is not enough for genetics to play in Unless it's some sort of epigenetic factors changing genetic expression? It's a possibility considering our animals are also getting fatter [1], including lab animals, whose diet is controlled and has not changed. [1] https://www.theatlantic.com/national/archive/2013/10/its-not-just-us-even-american-animals-are-getting-fatter/310063/ https://www.theatlantic.com/national/archive/2013/10/its-not...