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Glossary of Terms

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Bi-polar Disorder: Formerly called manic depression, it’s a mood disorder defined by episodes of elevated moods of two polar opposites: mania and depression.

Cannibidiol:  A chemical in the cannabis plant that reduces or buffers the psychoactive effects of THC.

Cannabinoids:  A group of compounds appearing in the cannabis plant, but also present naturally in the nervous and immune systems of humans.

COMT gene:  Catechol-O-methyl transferase, a gene on the 22nd chromosome that deactivates dopamine.  A variant in the gene, involving the amino acids Methionine and Valine, influences the amount of dopamine released, and seems to regulate how cannabis might affect mental health.

Dopamine:  A neurotransmitter in the brain that affects emotion, perception and movement.

Methionine:  An amino acid whose presence in the COMT gene seems to reduce the risk of marijuana-induced schizophrenia.

Neural pruning:  A neurological process occurring during the teen years that reduces the number of the brain’s overproduced or ‘weak’ neurons and reorganizes the synapses’ configurations – somewhat like defragmenting a computer.

Prodromal:  The earliest symptoms of a disease.

Psychosis:  A disordered mental state involving a loss of contact with reality, frequently with hallucinations, delusions or altered thought processes.

Schizophrenia:  A mental illness featuring recurring psychosis and a breakdown in the relation between thoughts, feelings and actions, usually accompanied by a withdrawal from social activity.

THC:  Tetrahydrocannabinol, the main psychoactive ingredient in the cannabis plant.

Valine: An amino acid whose presence in the COMT gene seems to increase the risk of marijuana-induced schizophrenia.

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