Krill oil contains phosphatidyl serine and phosphatidyl ethanolamine, which may contribute to neurodegenerative diseases.

“one last novel feature of krill oil is that it also is a great source of other phospholipids such as phosphatidyl serine and phosphatidyl ethanolamine both phosphatidyl serine and phosphatidyl ethanolamine accumulate in mitochondrial membranes as well as cell membranes and they have been shown to decrease in concentration in cell membranes and mitochondrial membranes with age in fact they're decreasing concentration has been shown to play a role in neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease”