However, while it’s generally true that the best way to get nutrients is through healthy foods, this is one example where a supplement may help. Some studies have shown that contaminants like mercury do not appear to accumulate in fish oil but remain primarily in the meat of the fish. So if you’re concerned about mercury, a high-quality fish oil supplement may help with depression, but ask your health care provider for advice.
Fish oil alone isn’t a depression treatment, but it may be a helpful addition to prescribed medications or other treatment. Although more studies are needed to determine exactly what role omega-3 fatty acids play in depression, it’s possible that fish oil supplements high in omega-3 fatty acids may lower the risk of depression. And omega-3 fatty acids help protect heart health.