Eating a snack with protein rather than just carbs can help curb hunger, keeping daily calories in check. Good options include an ounce of nuts or a small low-fat yogurt.
Mood-Boosting Snack: 8 ounces of low-fat plain yogurt (140 calories)
Benefits: Several studies link vitamin B12 deficiency to depression. While it's not an antidepressant, B12-rich low-fat yogurt might help lift a bad mood, and its live bacteria are your friends.