5. Fish Oil
Oily fish such as sardines, salmon, mackerel, tuna and herring are very rich in omega-3 fatty acids. The only way to get omega-3 fatty acids into your body is by eating them as your body does not produce them itself. Omega-3s help build neurotransmitters, as well as serotonin, which help tremendously to regulate mood. According to a study in the Journal of Clinical Psychiatry in 2011, patients suffering from major depression improved significanly when given omega-3 supplements.
