The present invention relates to uses of ether phospholipids in treating and preventing various diseases, including, but not limited to, neurodegenerative or brain diseases such as Alzheimer's disease, cognitive impairment, brain fatigue, Parkinson disease, depression, anxiety disorder, insomnia and schizophrenia； metabolic syndrome such as diabetes and obesity； various infectious diseases such as viral diseases； diseases related to inflammation； heart diseases, and immune disorders. Preferably, the ether phospholipids are derived from extracting bivalves, which provides superior efficacies in treating and preventing the diseases.
