Adolescent Brain Development
The period of brain maturation from puberty through the mid-20s, during which the ECS plays a critical role. Cannabis use during this period carries elevated risks for cognitive and psychiatric outcomes.
In Depth
The adolescent brain undergoes extensive synaptic pruning and myelination, with the prefrontal cortex maturing last (mid-20s). The ECS is critical for guiding this development. Adolescent cannabis use disrupts ECS-mediated neurodevelopment, with consequences for cognitive function, mental health, and addiction risk. Epidemiological studies consistently show that earlier onset of cannabis use is associated with greater cognitive impairment, higher rates of cannabis use disorder, and increased psychosis risk. Animal studies confirm that adolescent THC exposure produces lasting neurobiological changes not seen with adult exposure.
Further Reading
More in Neuroscience
Retrograde Signaling
A form of synaptic communication where the postsynaptic neuron sends chemical signals back to the presynaptic neuron to modulate neurotransmitter release.
Neurogenesis
The process by which new neurons are formed in the brain. In adults, primarily occurs in the hippocampus (dentate gyrus) and olfactory bulb.
Neuroprotection
The preservation of neuronal structure and function against injury, degeneration, or disease.
Neuroinflammation
Inflammation of nervous tissue, involving activation of microglia and astrocytes and release of pro-inflammatory cytokines within the CNS.
Hippocampus
A brain region critical for memory formation, spatial navigation, and stress regulation. Highly enriched in CB1 receptors and particularly sensitive to cannabinoid effects.