Phosphatidylserine (PS) is an essential building block of all cell membranes, with above-average concentrations in the nerve cells of the human brain. PS increases the fluidity of cell membranes and improves both the entry of nutrients and the elimination of wastes. It also enhances membrane integrity (essential for maintenance of the cell’s internal environment, signal transduction, and secretory vesicle release) and stimulates membrane repair.
Preliminary scientific research suggests that phosphatidylserine may reduce the risk of dementia in the elderly.
Most phospholipids are present across virtually all vegetable and animal foods. Phosphatidylserine, however, is present in foods in only small amounts.