Dubbed the Happiness Chemical (neurotransmitter) , be cautious of the Serotonin Deprivation, because it can make you unhappy in daily life causing one to crave anything it can to “fill the void”, when you probably just need to eat. Eating food produces Serotonin in the stomach giving your body the uptake of Serotonin it needs. Need more Serotonin, eat more food.