I think your suggestion may be correct. I really don't eat very much meat at all, and I intentionally avoid foods which I know to contain more then small amounts of tryptophan. My protein sources are mostly soured cream, cheddar cheese, brie, crab meat, shrimp, eggs, ice cream, and skimmed milk.
On a side note, last summer I was taking these weight gainer shakes that contained very large amounts of tryptophan. I felt so aweful on these shakes it wasn't even funny. I had a lot of "brain fog" and was just plain "out of it", groggy all the time, etc. It took about two weeks for that effect to go away after I stopped taking those shakes. |