Benefits of Phosphatidylserine

Evidence-Based Benefits

• Cortisol blunting — Monteleone et al. (1992) demonstrated that 800mg PS daily for 10 days significantly blunted the ACTH and cortisol response to physical exercise stress in healthy men, suggesting PS modulates HPA axis reactivity at the hypothalamic or pituitary level
• Stress resilience — Baumeister et al. (2008) showed 300mg soy-derived PS daily for 42 days reduced perceived stress and improved mood during a standardized mental arithmetic stress test (Trier Social Stress Test variant)
• Cognitive function — Kato-Kataoka et al. (2010) found 100mg soy-PS daily improved memory recognition and recall in elderly subjects with memory complaints in a double-blind RCT, with particular benefit for delayed verbal recall
• Exercise recovery — Starks et al. (2008) showed 600mg PS reduced cortisol and perceived muscle soreness after intense exercise, suggesting benefits for exercise-induced stress recovery
• Sleep support — by reducing elevated evening cortisol (a common cause of insomnia), PS may indirectly improve sleep onset and quality, particularly in individuals with stress-related sleep difficulties

What the Research Says

Phosphatidylserine has demonstrated efficacy in cortisol modulation and emerging evidence for stress resilience and cognitive enhancement. Monteleone et al. (1992) established foundational evidence that 800mg of phosphatidylserine blunts cortisol release during stress. Baumeister et al. (2008) extended this to a more practical 300mg dose, showing improved stress resilience and cognitive performance in individuals under induced stress. Hellhammer et al. (2014) further validated these findings in a larger study, demonstrating that phosphatidylserine-containing phospholipid complexes alleviate chronic stress symptoms.

For cognition, Kato-Kataoka et al. (2010) and Richter et al. (2013) provided randomized controlled trial evidence supporting phosphatidylserine's role in improving memory function in elderly individuals with cognitive complaints. The FDA recognizes a qualified health claim for phosphatidylserine, stating that its consumption may reduce the risk of dementia and cognitive dysfunction in the elderly, though this is based on very limited evidence.

Recent studies have explored additional applications. Bruton et al. (2021) conducted a systematic review and meta-analysis involving 216 participants, finding that 200-300mg/day of phosphatidylserine significantly reduced inattention symptoms in children with ADHD compared to placebo. Duan et al. (2025) demonstrated cognitive benefits, particularly in short-term memory, in older adults with mild cognitive impairment following supplementation. However, Friling et al. (2025) found no overall cognitive benefits in healthy children aged 8-12 years, though a subgroup with below-median baseline performance showed improved visuospatial memory.

These studies collectively highlight phosphatidylserine's potential across various domains of health and cognition, supported by robust evidence from multiple randomized controlled trials.

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