“Although several amino acids can be acutely or chronically toxic, even lethal, when too much is eaten, tryptophan is the only amino acid that is also carcinogenic. (It can also produce a variety of toxic metabolites, and it is very susceptible to damage by radiation.) Since tryptophan is the precursor serotonin, the amount of tryptophan in the diet can have important effects on the way the organism responds stress, and the way it develops, adapts, and ages.”
-Ray Peat
Author
Cari