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Phosphatidylserine is a vital component of neural cell membranes. After age 50 the body may synthesize too little PS, causing
declines in mental function and memory.
In clinical studies, subjects with cognitive impairments due to aging and Alzheimer’s disease improved in concentration, learning,
and recall. Benefits persisted at least 4 weeks after treatment was discontinued. PS was also shown to alleviate depression
and behavioral disorders in the elderly.
In healthy, non-active men PS blunted the cortisol increase that usually accompanies stressful exercise. (Elevated cortisol
levels promote accumulation of visceral fat, and may interfere with adaptation to athletic training.)
The positive benefits seen in medical studies has convinced many young, healthy people to use PS to enhance memory, raise
intelligence, and retard neurological aging — doses of 100-300 mg per day are usually used. Doses of 800 mg/day are needed
to lower cortisol levels.
Pronunciation: phosphatidylserine (FOSS-fuh-TIDE-ill-SEHR-een)