sam callahan said:
I don't think I am buying that most Americans ate light breakfasts of a roll and coffee for breakfast prior to the 1920s.
Much more manual labor back then - especially farm work - and a light breakfast wasnt going to take you far.
Read Farmer Boy by Laura Ingalls Wilder and take note of how much food was consumed (provided it was available).
Plus, bacon was a cured meat making it a practical staple.
Yes, there was far more manual labor, which does play a role for sure.
But the food supply was also much, much different than it is now. It was much smaller in terms of available products and there were little, if any, highly processed foods available. Folks weren't eating hot pockets and little debbies back then - most food was pretty fresh. Lard and tallow were the oils used to fry in instead of processed canola oil or other seed based oils that we consume a huge quantity of now. More butter was consumed. Raw milk was consumed, etc.
The industrialization of our food supply combined with the fact that after the tobacco lawsuits were settled and a whole bunch of the tobacco scientists migrated to the food industry and began really working on developing foods that are flat out addictive (sugar is one of the worst things Americans consume way, way, way too much of), our food supply essentially turned against us. There is a reason most people you see now are fat and when you go back and look at pictures of people from the 80's, 70's and before they are generally in much better shape across the board.