Topic Overview

Omega-3 fatty acids are found in marine or plant sources, such as fish oil and flaxseed oil. A few studies suggest that adding omega-3 fatty acids to medicine (such as lithium) can help reduce the depressive symptoms of bipolar disorder in some people. Omega-3 fatty acids don’t seem to have an effect on the manic symptoms of bipolar disorder. And omega-3 fatty acids alone are not a good treatment for bipolar disorder. They are not a replacement for medicine or other therapy used to treat bipolar disorder.^{footnote 1, footnote 2}

There are few, if any, negative side effects from omega-3 fatty acids. Loose stools are reported most often. Researchers think that omega-3 fatty acids help support the membranes of brain cells. This makes it easier for the cells to send signals to one another, which may make depressive symptoms less likely.^{footnote 1}