I've heard the idea before that this happens, because the blood is busy¹ moving digested food into storage, so it can't transport sugar into the brain as well. And then that feeling of low blood sugar causes your dumb brain to look for sweets.
Respectively, I've found that actually eating less per meal or eating a mix of nutrients where most take longer to digest (proteins, wholegrain, vegetables etc.) can lessen that effect.
Additionally, you can also try to get into a habit where when you do get this low blood sugar feeling, that you specifically don't give your body sweets (to not reinforce this as the solution your brain craves).
And then instead, you can try to increase your heart rate to improve sugar circulation, by taking a little walk or doing a stupid little dance or whatever sport you can quickly do without puking.
Ideally, your brain will start craving this physical activity.
¹) I'm guessing 'busy' means it circulates more actively through your stomach and less actively for other sections of your circulatory system.
They're partially right. Eating sugar relaxes the stomach making you feel less full.
I don't know if it's by design, but having a small dessert after a big meal will make you feel less bloated and more comfortable.
I dont think that's how it works. it's a two-part process:
first, the body craves diverse foods. if you eat a lot of something good, it stops seeming good. so you have a lot of fatty proteins for dinner, sweets seem more appealing.
second, there's ghrelin, the hormone that makes you hungry. when you eat, your blood concentration of it goes down and you get less hungry. glucose does NOT have this effect. perhaps because it's quick to digest and a fast energy source so it helps to eat more in a calorie poor environment, no sense getting full off berries.
so after dinner, your body still feels like it could eat more sugars. it's not until the stomach stretches that you feel full off dessert
I'm usually not like this... but I did get used to this when living abroad and having dinner with some German friends. The 'sweets' after dinner weren't too overboard though, so it didn't make me feel guilty.