L-lysine and L-arginine reduces anxiety and basal cortisol levels in healthy humans https://t.co/7TD7MT5FIS 1 week of 5–6 grams/day of both AA's decreased both long-term and stress-induced anxiety, likely via benzodiazepine, serotonin, and other receptors in the gut and brain. https://t.co/Ae9PFmGfFr