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No matter our differences, one common denominator brings us all together: food. We need it in order to survive and thrive. In fact, a good meal impacts our overall moods as well as our bodies.

Science has proven that some foods can actually improve our moods. So-called "happy foods" affect us physiologically because they contain higher levels of vitamins and minerals that impact the production and release of serotonin, the neurotransmitter scientists believe is largely responsible for fostering feelings of happiness. On the other hand, comfort foods have a psychological benefit. Would you choose these so-called happy foods over rich, bad-for-you comfort foods? You don't have to. HowStuffWorks.com replaced the naughty with nice in these favorites for you.

• Salmon and Brown Rice: Although most of us wouldn't consider salmon a comfort food, it's certainly one of the most nutritionally beneficial foods available. Multiple studies have linked depression to imbalances in omega-3 fatty acids, found abundantly in fish. So, by that logic, more fish= more omega-3 fatty acids= more happy.
• Spaghetti and Lean Meatballs: There are many benefits of whole-wheat pasta: It's high in folic acid and helps increase serotonin levels. Ambitious chefs don't have to let the nutritional gains end there, however. Meatballs or sauce made with lean beef are great sources of protein, selenium and B6, the vitamin that facilitates serotonin production.
• Sweet Potato Souffle: Complex carbohydrates, such as sweet potatoes, are packed full of energy and mood-boosting vitamins and minerals. Although many dieters malign carbs of all shapes and sizes, low-carbohydrate diets have been linked with a reduced desire to exercise and increased fatigue in overweight adults. So c'mon, treat yourself to something sweet, and let it be a vitamin-packed, serotonin-boosting sweet potato.

Full list at HowStuffWorks.com.

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