Omega-3 is an essential fatty acid that is found in fish and in certain plants such as flaxseed, pumpkin seed, and walnuts flax seeds. Omega-3 appears to be critical to the growth and maintenance of brain cells. It is strongly implicated in helping depression and Bipolar Disorder. A 1999 Harvard pilot study was conducted on 30 patients with bipolar disorder. The trial was supposed to go on for nine months, but was stopped after four due to its outstanding results. Psychiatrist, Andrew Stoll, MD, faculty member at Harvard Medical School, wrote the book, The Omega-3 Connection, where he documented how daily intake reduces depression and improves heart function.