Phosphatidylserine is a phospholipid that constitutes 15% of the brain's total phospholipid pool and is critical for cell membrane fluidity, neurotransmitter release, and cortisol regulation. Our research shows moderate evidence for cognitive decline in the elderly — the FDA even authorized a qualified health claim (rare for supplements). PS also reduces exercise-induced cortisol by 20-30%, making it popular among athletes. The original bovine brain-derived PS (BC-PS) was replaced by soy-derived PS after BSE/mad cow concerns, though the evidence was primarily generated with the bovine form.
PS is a structural component of neuronal cell membranes that influences: (1) membrane fluidity — determining how well receptors and ion channels function; (2) acetylcholine release — directly enhancing the primary memory neurotransmitter; (3) cortisol regulation — PS supplementation blunts HPA axis activation, reducing cortisol output during physical and psychological stress; (4) apoptosis signaling — PS normally resides on the inner membrane leaflet; its externalization signals "eat me" to macrophages. Supplemental PS replenishes depleted neuronal membranes, which deteriorate with aging and chronic stress.
No critical interactions identified.
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.