Shift your fatty acid balance in favor of a brighter mood.

Modern diets are high in omega-6 fatty acids -- found in meat, eggs, refined grains, and corn oil -- and low in omega-3 fatty acids. New research suggests this imbalance could be a risk factor for depression. Add more mood-boosting omega-3-rich foods, such as flaxseeds, fish, and nuts, to your diet.

Omega-6s and omega-3s are forms of polyunsaturated fatty acids. Researchers have long suspected that deficiency in omega-3 fatty acids contributes to depression. Now, a new study reveals that the balance between omega-3s and omega-6s may influence depression risk. In the study, brain cell membranes of depressed rats had elevated levels of arachidonic acid, a type of omega-6, in certain areas. Nondepressed rats had lower levels. The amount of omega-3s in the brains of both depressed and nondepressed rats, however, did not differ significantly. Omega-6s are found in abundance in red meat, poultry, refined grains, and certain fats such as corn oil and margarine. Balance your intake of these foods with your intake of omega-3s found in fatty fish, canola oil, flaxseeds, soybeans, and nuts.