Many recent studies on the impact of marijuana use among youth show significant changes in neurodevelopment that result in memory deficits, reduced IQ, and changes in personality.

• American Addiction Center: Impact of Marijuana on the Teenage Brain.

• American Psychological Association: Long-Term Effects on the Adolescent Brain.

Marijuana use can result in slowed reaction time, problems with motor coordination, a compromised immune system, and diminished lung capacity. Just as concerning, marijuana has a serious detrimental effect on motivation.