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you also left out the context of what was being debunked? what i said about tyrosine? because i literally have done this twice, phenylalanine does it too. when there is a large amount of free amino acids in the blood, it stimulates conversion into the neurotransmitters that are made from them. dopamine, adrenalin, noradrenalin. yes, in the brain is 1 and 3 and in the adrenal glands is 2. the thing about tryptophan is entirely different. they literally took it off the OTC market in australia as Prozac was introduced. tryptophan is an essential nutrient, and depression and related psychological disturbances are caused by deficiency. also note that chicken and pig both have high levels of these large, catecholamine precursor amino acids. beef, turkey and salmon have high natural levels of tryptophan. meats that are low in catecholamine precursors or high in tryptophan are ok to eat before bed, in moderate amounts. pig and chicken will ruin your sleep.