Because of the significant amount of protein and good fat that it includes, eating a snack that contains peanut butter makes you feel full for a longer period of time. This is because peanut butter contains a lot of protein. Consuming foods that make you feel full without making you feel deprived is vital if you want to successfully lose weight. This is where you should focus your efforts. The reason for this is that consuming foods that increase feelings of fullness can actually prevent you from eating an excessive amount.