For general wellness maintenance, oral precursors like NAC or GlyNAC supplementation can modestly support endogenous synthesis, but they are not equivalent to IV administration for therapeutic replenishment
199-201 On the other hand, dietary patterns associated with reduced male fertility are characterized by high intake of red and processed meats, sweet drinks and snacks, trans- and omega-6 fatty acids, and overall calories, as well as low intake of fiber, fish, fruits and vegetables, and nuts and seeds
T.et al (2016)
Its cognition-enhancing effects may be due to an ability to influence the brains levels of noradrenaline, serotonin, and dopamine,4 three neurotransmitters with well-documented relationships to vigilance, attention, learning,5 memory,6 and the motivation toward cognitive effort.7 Meanwhile, its anxiolytic effects appear to be GABAergic (i.e., relating to the neurotransmitter GABA)