What question did this study set out to answer?

To systematically evaluate human and animal literature comparing the differential effects of repeated, long-term tobacco and nicotine exposure on cognitive and neural outcomes between adolescents and adults.

January 7, 2023Neuroscience & Biobehavioral ReviewsOpen Access

Age-dependent effects of tobacco smoke and nicotine on cognition and the brain: A systematic review of the human and animal literature comparing adolescents and adults

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To systematically evaluate human and animal literature comparing the differential effects of repeated, long-term tobacco and nicotine exposure on cognitive and neural outcomes between adolescents and adults.
Conducted a systematic review synthesizing published evidence across both human clinical/observational cohorts and controlled animal models.
Extracted and compared neurobiological markers, behavioral outcomes, and cognitive endpoints following adolescent versus adult nicotine and tobacco smoke exposure.
Adolescent exposure produced greater increases in fear learning, anxiety-related behaviors, reward processing, nicotinic acetylcholine receptor density, dopamine expression, and serotonin dysregulation relative to adult exposure.
Impulsivity outcomes did not demonstrate distinct age-dependent differences across the evaluated studies, though numerical effect estimates were not statistically pooled across the heterogeneous literature.

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Implication

Systematic review reveals heightened neurochemical and emotional vulnerabilities to nicotine during adolescence, highlighting mechanisms that drive youth-specific substance risks.

Cite This Study

Colyer‐Patel et al. (2023) studied this question.

synapsesocial.com/papers/6a9a4d026f891be7b24d66b4 https://doi.org/10.1016/j.neubiorev.2023.105038

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Implication

Systematic review reveals heightened neurochemical and emotional vulnerabilities to nicotine during adolescence, highlighting mechanisms that drive youth-specific substance risks.

Age-dependent effects of tobacco smoke and nicotine on cognition and the brain: A systematic review of the human and animal literature comparing adolescents and adults

Key Points

Discussion

Implication

Cite This Study

Age-dependent effects of tobacco smoke and nicotine on cognition and the brain: A systematic review of the human and animal literature comparing adolescents and adults

Key Points

Discussion

Implication

Cite This Study

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