Comment by traviswingo

I personally don’t think it’s that complicated. I think it’s simply just the result of caloric density increasing as foods become engineered to make us want more. They’re saltier, sweeter, and generally more addictive. You can eat 2,000 calories in a sitting and not “feel full.”

Now, if you remove breads, sugars, and processed foods, try eating the same number of calories with whole foods only. You’ll become full way before you reach that number.

And some people, like your wife, simply respond to food differently. Id say she’s in the minority, though.

I, like yourself and most people, don’t feel full until I’ve eaten an unreasonable amount of certain types of foods. Since switching to Whole Foods and cutting out breads, sugars, and processed foods, I’ve lost weight while eating until I’m full/satisfied.