How Cannabis (Marijuana) Affects the Brain & Body | Dr. Andrew Huberman

Marijuana’s effects on attention, memory, and learning may last a long time or even be permanent,11 but more research is needed to fully understand these effects. Youth who use marijuana may not do as well in school and may have trouble remembering thingsThe impact of marijuana use on the brain depends on many factors, including:
• Amount of tetrahydrocannabinol (THC) in marijuana (in other words, the concentration or strength),
• How often it is used,
• Age of first use, and
• Whether other substances (for example, tobacco and alcohol) are used at the same time.
Long-term impacts on the brain may also be caused by something other than marijuana, such as genetics, the home environment, or other unknown factors.14 The National Institute on Drug Abuse is conducting a large long-term study (the Adolescent Brain Cognitive Development studyexternal icon, or ABCD study) to better understand the role marijuana and other substances play in adolescent brain development.
https://www.cdc.gov/marijuana/health-effects/brain-health.html