Why don’t people just get real over their personal diets, or preferably their eating regimes.
Just get a copy of the British war-time ration allowances. The “man in the street” was fitter and healthier living on the wartime rations than at any previous times. People who were unemployed during the ’30s and could not afford much more than potatoes to live on, now found there was work (wartime meant lots of vacancies) so they could afford the rations, and they ate well. Any well off locals who fattened themselves up prior to ’39 now found that even with a bit of black market, they could still only eat enough to keep then fit not fat. Today we deprecate lard, then it was an essential part of the war time diet.
But today people just eat far too much lard or similar fats, so they get fat, become diabetic, and have heart attacks.
You don’t need university studies, just apply common sense, IF YOU HAVE ANY!
Les.