This diet trick does exist and it’s called eating eggs. :) The protein and fat in conjunction with leptin are highly satiating and are easier and cheaper to feed than the macros and chemicals individually.
From personal experience nothing made as much difference. I counted calories but switching to high satiety foods made it quite a lot easier.
High fiber foods take a lot longer to digest so make you full longer. Warm oats and pears are a great example.
https://www.fortitudenutritioncoaching.com.au/blog/satiety-h... is a reasonable overview.
https://pubmed.ncbi.nlm.nih.gov/7498104/ is a satiety index of common foods which is really useful.
Surely this is exaggeration?
I make a three egg omelette a few times a week, and it's quite filling. I could probably do six eggs without making myself sick, but not a dozen and definitely not 20.
She was a doctor and had an obese patient who was struggling to lose weight, he complained that he had changed his diet to be very healthy but it still didn't help
gm: "ok let's start with breakfast, what do you usually eat?"
patient: "oh, just a plain omelette - I don't even use butter or oil!"
gm: "ok that sounds good, tell me exactly how you prepare it"
patient: "well, I crack 12 eggs into a pan..."
Apparently they saw they were sold by the dozen and thought that was the suggested serving size
No, this is not an exaggeration. For reference, I am 1.73m and 65kg. When I eat eggs, in whatever form, boiled, fried, etc, I can keep eating them until my stomach is physically full, which takes about 20 eggs, but even then I still feel hungry and non satiated.
I've been trying to replace other things I eat with eggs, for the supposed health benefits, but I can't, eggs simply don't provide any satiation to me. And no, I don't eat massive quantities of other foods, it's mostly eggs I have this problem with. I can eat a single slice of home-made sourdough bread with a simple pate, and I feel much more satiated than after 20 eggs.
(for lazy americans, this person is 5'8" / 143lb)