In-Shell Pistachios

In-shell pistachios are a good low-cal source of protein, with a filling 6 grams of protein per ounce and only 100 calories per 30-nut serving. Researchers at Eastern Illinois University reported that eating in-shell pistachios resulted in eating 41% less calories compared to those who ate shelled nuts. The logic is that the nuts’ shell helps to trick the brain into thinking that you’ve eaten more than you actually have. For a super satisfying snack that won’t weigh you down, keep a bag of these unshelled nuts handy.