Marijuana is a strain of the plant Cannabis Sativa L that is selectively bred for mind/body altering effects while it's sister strain, Hemp, is bred to produce fiber and seed. Cannabis binds to the receptors that help regulate appetite, pain sensation, mood and memory more intensely than natural neurotransmitters do. Because cannabis stays in the body longer than many other substances, it may arrest brain development longer and decrease the amount of natural neurotransmitters that regulate digestion, mood, and sleep.

Featured Resource

Youth Now is a youth substance use prevention initiative developed by caring adults and local youth, paid for by marijuana tax dollars and other grants. Youth Now offers resources, campaigns, research and other supports for youth, parents, educators and providers  to build resilience and prevent youth substance use.

take a quiz

Assess your cannabis use with this non-judgmental approach to screening cannabis use issues.

How much do you really know about the effects and risks of marijuana? You might be surprised. Test your marijuana IQ.


SAM's mission is to educate citizens on the science of marijuana and to promote health-first, smart policies and attitudes that decrease marijuana use and its consequences.

Get the latest marijuana reserach from UM including botanical, pharmacological and chemical properties of the cannabis studies.


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If you need help and are under the age of 18, reach out to a trusted adult, such as a counselor, a parent, a teacher, or a coach. Finding assistance and the best-fit resources in your community is priority. To book Dr. Crystal Collier to present at your school, parent organization, or in your community, please contact us!

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