Why impute that to the bacteria? Sugar consumption supposedly facilitates tryptophan transport in the absence of other competing amino acids, which in turn boosts serotonin. That effect might not necessarily show up in an insulin/blood sugar imbalance.
That is a good point. I should add that I take about 75mg of each amino acid daily, plus extra l-glutamine a few hours later, as the abundance of l-glutamine blocks the absorption of the other amino acids. I do this early in the day, so more of them should have been processed by the evening time.
