Mocking, R.J.T. et al. (2016)
Translational Psychiatry, 6(3): e756

Fish oil may improve depression symptoms. In this 2016 meta-analysis of 13 studies examining 1,233 participants, the researchers found an overall beneficial effect of omega-3 polyunsaturated fatty acid (PUFA) supplementation on depressive symptoms in patients with major depressive disorder, especially those who used higher doses of eicosapentaenoic acids (EPA) and those who combined PUFAs with conventional antidepressants. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
To supplement with PUFA (which contain EPA), consider shopping for omega-3 fish oil capsules such as krill oil. As it stands, deficiencies in omega-3s are associated with a host of chronic physical and mental health problems such as depression and chronic fatigue - so, it might be a good idea to get this base covered and supplement with EPA-rich omega-3s if you don’t already consume a lot of fish in your diet. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Mocking, R. J., Harmsen, I., Assies, J., Koeter, M. W., Ruhé, H. G., & Schene, A. H. (2016). Meta-analysis and meta-regression of omega-3 polyunsaturated fatty acid supplementation for major depressive disorder. Translational psychiatry, 6(3), e756. doi:10.1038/tp.2016.29