A new study found that DHA and EPA, given in a combined supplement at prescription levels, improved cognitive function in older adults with coronary artery disease, or CAD. It is a common type of heart disease that occurs when plaque builds up in the arteries and hinders proper blood flow. Studies have shown people with CAD have a 45% increased risk for cognitive decline.

The largest improvements in brain function were seen when higher levels of both types of omega-3 fatty acids were present in the bloodstream. When analyzed individually, DHA levels were a better predictor for cognitive improvement than EPA, suggesting the presence of one type of omega-3 fatty acid was more important than the other, the authors concluded.

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