Five'reasons'have'been'documented'for'focusing'on'the'impact'that'
marijuana'has'on'children'and'adolescents.'The'human'brain'continues'to'undergo'
important'development'up'until'the'age'of'25.'As'a'result'of'their'brains'still'
undergoing'growth'and'development,'children'and'adolescents'are'at'far'greater'
risk'of'becoming'dependent'on'marijuana,'and'dependence'happens'far'more'
quickly.'Apart'from'addiction'itself,'children'and'adolescents'are'more'significantly'
affected'by'marijuana'in'other'ways.'Structural'changes'have'been'found'in'the'
brains'of'young'marijuana'users'that'lead'to'functional'impairments,'including'
cognitive'deficits'that'can'result'in'educational'under=achievement.'Subtle'effects'of'
marijuana'on'emotions'are'increasingly'being'demonstrated'in'all'marijuana'users'
that'would'be'more'profoundly'disruptive'to'individuals'still'developing'
psychologically.
While'the'majority'of'children'and'adolescents'who'use'marijuana'do'not'
become'dependent'and'are'not'grossly'harmed,'the'fact'remains'that'their'brains’'
are'modified.'This'is'the'reason'people'smoke'marijuana,'to'change'their'brains,'and'
thus'to'change'their experience.'Altered'brain'function'alters'a'person’s'subjective'
experience'of'themselves'and'the'world.'However,'altering'brain'function'by'
introducing'excessive'cannabinoid'stimulation'also'physically'alters'the'brain'well'
beyond'the'period'of'initial'intoxication.'When'marijuana'use'becomes'daily,'or'
nearly'daily,'this'alteration'to'the'brain'can'become'chronic,'and'structural.'In'very'
many'cases,'children'and'adolescents'who'reach'this'point'in'their'marijuana'use'do not'perceive'the'ongoing'impact'of'marijuana'on'their'experience,'nor'do'they'often'
connect'any'negative'changes'in'their'lives'with'marijuana'use.'
The overwhelming preponderance of scientific evidence provides adequate rationale
for public policies that deter, delay and detect child and adolescent marijuana use. Our
goal should be to limit access to marijuana for those under 21, to keep youth engaged in
school, to provide schools with resources to identify and help students using marijuana,
to construct a community-based intervention system to evaluate youth under 18 years of
age who are using marijuana problematically and to provide them educational and
constructive interventions, and to provide professional treatment to youth who have
become dependent on marijuana. Deter, delay and detect.