phosphidylserine memory aid? Good or bad? Affective in young and old?

Answer 1

PS is not an essential nutrient, and therefore dietary deficiencies do not occur. Adults age 50 and older, especially those with age-related cognitive decline, may not synthesize enough PS, and appear most likely to benefit from supplemental PS.

Most research has been conducted with PS derived from bovine (cow) brain tissue. Due to concerns about the possibility of humans contracting infectious diseases (such as “mad cow” disease), bovine PS is not available in the United States.
The soy- and bovine-derived PS, however, are not structurally identical.

Preliminary animal research shows that the soy-derived PS does have effects on brain function similar to effects from the bovine source.