A study published in the "Archives of General Psychiatry" found that a Mediterranean diet may be good for your heart and could help reduce your risk for depression. Study participants who followed the Mediterranean diet lowered their risk of developing depression by 30 percent compared to participants who did not follow the diet.
What does the Mediterranean diet look like? It emphasizes eating monounsaturated fatty acids instead of saturated fatty acids (for example, choose olive oil over butter), lots of omega-3 fatty acids from fish, nuts and legumes, and B vitamins from fruits, vegetables and whole grains. Meat, dairy and alcohol aren't forbidden but they aren't the focus of this diet. And as for refined carbs and sugars, you'll have to ditch them.