Satiety is the sense of fullness that ends a meal and delays hunger returning. It is controlled by gut hormones including GLP-1, stomach stretch signals and brain appetite centres, and it varies genuinely between people.
Weak satiety signalling makes weight management harder regardless of discipline, which is why modern treatment targets it directly: protein and fibre rich meals, sleep, and in suitable patients prescription medicines that act on the same hormone pathways. A doctor can assess which factors are blunting satiety.