Past studies have suggested a link between low omega-3 serum levels and an increased likely hood of depression related conditions.
Dietary sources of DHA include:
- Fish, including shellfish and finfish (Pacific sardines, Atlantic salmon, sockeye salmon, rainbow trout, and canned white tuna in particular)
- Organ meats
- High quality fish oil supplements
- Seaweed or algal-oil capsules
Source: Dietary intake of fish and PUFA, and clinical depressive and anxiety disorders in women