Brain production of serotonin is very sensitive and extremely dependent on our diet. Eating green, yellow and orange veggies can brain’s serotonin secretion. This happens because of improved absorption of the amino acid L Tryptophan which is present in vegetables. Conversely, even if meat contains safer form of L Tryptophan it will have to compete with various other amino acids for absorption. In the process L- Tryptophan loses out. So, choose veggies over meat, especially during stressful times.