The Effects of Cannabis (Marijuana) on the Brain & Body

Huberman Lab

In this episode, I discuss cannabis (aka marijuana), including the biological mechanisms underlying its effects on the mind and body, its known medical applications, its impact on libido, creativity, hunger, hormones and more. I also cover the known adverse health consequences of chronic and even acute (one-time) use and the factors that determine if cannabis is helpful or harmful. Additionally, I detail how the various strains of cannabis: sativa, indica and hybrid strains, can produce such divergent effects depending on the strain type, THC-to-CBD ratio, total dosage, and frequency of use. I review why cannabis can impact speech patterns and one’s propensity to develop anxiety/depression during and after use and, in some individuals, paranoia. As the legal landscape for cannabis is rapidly evolving, this episode should interest a wide audience, including former/current cannabis users, those in the medical, sports, law enforcement, and educational communities and, of course, children, teenagers, and parents.

For the full show notes, visit hubermanlab.com.

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Timestamps

(00:00:00) Cannabis (Marijuana)

(00:005:02) Sponsor: LMNT

(00:07:03) Tool: Non-Sleep Deep Rest (NSDR), Sleep & Anxiety

(00:15:08) Cannabis Strains, Psychoactive Compounds: THC & CBD

(00:19:34) Sativa vs. Indica, Stimulant vs. Relaxation Effects

(00:25:55) Hybrid Cannabis Strains, Type 1, 2 & 3 Strains

(00:31:56) Naturally Occurring Receptors: Nicotinic & Cannabinoid Receptors (CB1)

(00:35:18) Sponsor: AG1

(00:40:35) THC, CBD vs. Endogenous Cannabinoids, Dependence

(00:43:14) Endogenous Cannabinoids, Cannabinoid Receptors & Nervous System Function

(00:53:07) Biological Effects of Cannabis

(00:56:29) Cannabis Sativa & Subjective Effects: Mood, Stress, Alertness, Paranoia

(01:04:58) Cannabis Indica & Subjective Effects, Memory, Dosage

(01:09:41) Brain Areas Affected by THC & CBD, Side Effects

(01:16:08) Creativity: Convergent vs. Divergent Thinking & Dopamine

(01:26:41) Does Cannabis Increase Creativity?

(01:35:08) Chronic Cannabis Use & Changes in Speech Patterns

(01:46:46) Cannabis & Libido, Dopamine & Prolactin

(01:56:55) Cannabis & Hormones: Prolactin, Testosterone, Estrogen & Fertility

(02:06:53) Smoking/Vaping Tobacco or Cannabis & Negative Health Consequences

(02:10:06) Avoiding Cannabis During Pregnancy/Breastfeeding, Fetal Neural Development

(02:18:13) Negative Health Consequences of Cannabis, Anxiety & Depression, Tolerance

(02:25:57) Cannabis Use & Adolescence/Young Adulthood, Predisposition to Psychosis

(02:34:36) Adolescent Cannabis Use: Brain Development & Mental Health Disorders

(02:41:44) Cannabis & Pain Management, Divergent Effects of Cannabis

(02:44:54) Zero-Cost Support, YouTube Feedback, Spotify & Apple Reviews, Sponsors, Huberman Lab Premium, Momentous Supplements, Neural Network Newsletter, Instagram, Twitter, Facebook, LinkedIn

Title Card Photo Credit: Mike Blabac

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