They boost satiety
Eating good fats helps to slow stomach emptying, which keeps you fuller longer and delays the return of hunger. Avocados, which provide about 22 grams of fat each (mostly as heart healthy monounsaturated fatty acids, or MUFAs), certainly fit the bill. In one recent study, volunteers rated feelings of satisfaction and appetite after dining on meals with or without avocado. The addition of half of an avocado to meals resulted in a significant boost in self-reported satiety and a reduced desire to eat for up to five hours. This is one of the reasons I often reach for guacamole as my salad dressing.