
Serotonin levels have been shown to correlate with motivation, concentration, energy, sociability, and
libido, and to correlate negatively with anxiety. Too little serotonin in combination with other neural changes and we become isolated, lose motivation and the ability to concentrate, and experience increased anxiety. If we have increased amounts of serotonin present in our neural synapses we become full of energy, gregarious, and our libido increases.