More than 15 million Americans currently live with some form of depression. This mood disorder can occur at any age and may cause a variety of other health issues. One natural way to help ease the symptoms of depression is to focus on a nutrient-rich diet. Studies have shown that omega-3s, found in seafood like salmon and tuna, particularly EPA, may help improve symptoms of depression. EPA is especially important to help reduce postpartum depression in new moms. This is because of the mood-boosting effects omega-3s have on the brain. Research also suggests that people who are deficient in omega-3s may be more likely to develop depression.