A study has found how the brain chemical serotonin, a molecule typically associated with mood, appetite and libido, makes a direct contribution to the actions of cocaine. Nationally, more than 1 in 3 drug misuse or abuse-related emergency department visits (40 percent) involved cocaine.

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A study has found how the brain chemical serotonin, a molecule typically associated with mood, appetite and libido, makes a direct contribution to the actions of cocaine. Nationally, more than 1 in 3 drug misuse or abuse-related emergency department visits (40 percent) involved cocaine.