I'm pretty stuffed after eating two slices of bread with "pålegg". The bread is not a sugary white bread but it has whole grains and much more fiber.

In general I don't think I'm a big eater though, most food servings I get outside of home are huuge.. I might be able to eat a 160g cheeseburger if I'm really hungry but that's without any side dishes.

3 slices of bread with cheese. 2 slices with some kind of meat as pålegg. That last slice I almost have to force myself to eat because I can't afford to go down in weight.

Hungry after? No way.

Your theory is that tens of thousands of people are hungry after eating lunch every day and didn't notice they aren't eating enough?