Which nutrient also contributes to satiety after meals along with protein?

Fat contributes to satiety after meals in a significant way, much like protein does. This is because fat takes longer to digest and provides a rich source of energy, which can help prolong the feeling of fullness after eating. The presence of fat in a meal can slow gastric emptying, meaning food stays in the stomach longer and promotes a sense of fullness. Additionally, dietary fats can trigger the release of hormones that signal satiety to the brain, further reinforcing the feeling of having had enough to eat.

In contrast, while fiber does play a role in satiety—by adding bulk to meals and slowing digestion—its primary function is more related to digestive health rather than directly increasing the feeling of fullness. Carbohydrates can influence satiety, but they do not have the same lasting impact as protein and fat, particularly simple carbohydrates which can lead to quicker spikes and drops in blood sugar, often leaving one feeling hungrier sooner. Sugar, being a type of carbohydrate, also does not promote lasting satiety and is often associated with cravings rather than fullness. Thus, fat is a key nutrient that, along with protein, significantly aids in achieving and maintaining satiety after meals.