Low levels of both EPA and DHA contribute to mood disorders. Make sure you are getting daily enough of these compounds. These fats are important components of our cell membranes, keeping them healthy and fluid, and they produce potent anti-inflammatory compounds that play a major role in reducing inflammation in the body. DHA is especially concentrated in the brain, and research suggests that low levels of both, EPA and DHA, not only contribute to mood disorder, but they have been shown to help with post-traumatic stress disorder (PTSD), brain injury, depression, bi-polar disorder, post-partum depression, and anxiety. Even, if you are eating wild-caught salmon every day, you are not getting optimal amounts of these health-promoting fats. Keep yourself in good shape!!!