Described herein are manufactured dietary supplements that contain a phospholipid extract and the extract contains two forms of phospholipid-docosahexanoic acid. One form of phospholipid-docosahexanoic acid is phosphatidylcholine-docosahexanoic acid, and another form of phospholipid-docosahexanoic acid is phosphatidylethanolamine-docosahexanoic acid. The manufactured dietary supplement also contains L-methylfolate.