The effects of nutrients on mood.

@article{Benton1999TheEO,
  title={The effects of nutrients on mood.},
  author={David Benton and Rachael T. Donohoe},
  journal={Public health nutrition},
  year={1999},
  volume={2 3A},
  pages={
          403-9
        }
}
A recent major theory was that a meal high in carbohydrate increased the rate that tryptophan enters the brain, leading to an increase in the level of the neurotransmitter serotonin that modulates mood. Although such a mechanism may be important under laboratory conditions it is unlikely to be of significance following the eating of any typical meal. As little as 2-4% of the calories of a meal as protein will prevent an increased availability of tryptophan. Arguably the food with the greatest… 

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