First question: I am yet to come upon any decent pathways or mechanisms by which phosphatidylserine exerts its mood-elevating and cortisol/ACTH-lowering effects. Any speculations or ideas?
Question B: Would lecithin/phosphatidylcholine supplementation negate phosphatidylserine supplementing? I am fairly sure that the net phospholipid content of our body's doesn't increase when supplementing PS. I have been assuming that PS supplementation alters the phospholipid membrane composition; thus supplementating any other phospholipid would induce less overall PS incorporation...?