# Longitudinal Neurocognitive Trajectories in a Large Cohort of Youth Who Use Cannabis > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/longitudinal-cannabis-cognitive-trajectories-youth-study/ > **Published:** 2026-04-19T23:04:01-04:00 | **Last Modified / Clinically Audited:** 2026-09-28T10:17:41-04:00 > **Clinical Summary:** Explore longitudinal cannabis cognitive trajectories in youth and their impact on brain development and neurocognitive function over time. --- ✦ New CED Clinical Relevance  #70Notable Clinical Interest  Emerging findings or policy developments worth monitoring closely. ⚒ Cannabis News  |  CED Clinic Adolescent MedicineNeurodevelopment[Cognitive Function](https://cedclinic.com/reverse-cholesterol-transport-function-cannabis-users/)Youth CannabisBrain Development Why This Matters This longitudinal study provides crucial data on how [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) affects developing brains over time, which is essential for clinicians counseling adolescent patients and families. Understanding neurocognitive trajectories helps inform risk-benefit discussions when cannabis is considered medically or used recreationally by youth. Clinical Summary This large-scale longitudinal study tracked neurocognitive function in youth cannabis users over extended periods, examining domains like memory, attention, and executive function. The research contributes to our understanding of how cannabis exposure during critical neurodevelopmental windows may influence cognitive trajectories. The study design allows for better assessment of causation versus correlation compared to cross-sectional studies, though confounding variables in observational research remain a limitation. Dr. Caplan’s Take “While we await the full findings, longitudinal data like this helps move us beyond the ‘cannabis will ruin your brain’ versus ‘cannabis is harmless’ false binary. The real clinical question is understanding which youth, using how much, for how long, experience what specific cognitive impacts.” Clinical Perspective 🧠 Clinicians should use emerging longitudinal data to have nuanced conversations with adolescent patients and families about [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) risks. This includes discussing individual risk factors, frequency of use patterns, and cognitive domains that may be most vulnerable during [adolescent brain development](https://cedclinic.com/adolescent-cb1-receptor-antagonism-social-behavior/). Monitor for changes in academic performance, attention, and memory function in youth patients who use cannabis. 💬 Join the Conversation Have a question about how this applies to your situation? [Ask Dr. Caplan →](https://benjamincaplan.com/ask-dr-caplan) Want to discuss this topic with other patients and caregivers? [Join the forum discussion →](https://cedclinic.com/interact/discussion-forums/forum/cannabis-industry/) Have thoughts on this? Share it: [𝕏 Share on X](https://twitter.com/intent/tweet?text=Just%20read%20this%20on%20CEDclinic.com%3A%20Longitudinal%20neurocognitive%20trajectories%20in%20a%20large%20cohort%20of%20youth%20who%20use%20cann...%20%40drcaplan&url=https%3A//www.nature.com/articles/s41386-026-02395-1)[in Share on LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A//www.nature.com/articles/s41386-026-02395-1)[🦥 Share on BlueSky](https://bsky.app/intent/compose?text=Just%20read%20this%3A%20Longitudinal%20neurocognitive%20trajectories%20in%20a%20large%20cohort%20of%20youth%20who%20use%20cann...%20--%20via%20%40drcaplan.bsky.social%20https%3A//www.nature.com/articles/s41386-026-02395-1)[📷 Follow on Instagram](https://www.instagram.com/drbenjamincaplan/)[📝 Read more on Substack](https://substack.com/@doctorapproved)[🔔 Subscribe via RSS](https://cedclinic.com/category/cannabis-news/feed/) 📰 Source: [https://www.nature.com/articles/s41386-026-02395-1](https://www.nature.com/articles/s41386-026-02395-1) Table of Contents - [FAQ](#FAQ)[What is the clinical significance of this cannabis research?](#What_is_the_clinical_significance_of_this_cannabis_research) - [What age group does this cannabis study focus on?](#What_age_group_does_this_cannabis_study_focus_on) - [What aspects of brain function are being studied?](#What_aspects_of_brain_function_are_being_studied) - [Why is adolescent cannabis research clinically relevant?](#Why_is_adolescent_cannabis_research_clinically_relevant) - [What type of clinical guidance does this research provide?](#What_type_of_clinical_guidance_does_this_research_provide) - [Related](#Related) ## FAQ #### What is the clinical significance of this cannabis research? This research has been rated as “Notable Clinical Interest” (#70) by CED Clinical Relevance. It represents emerging findings that are worth monitoring closely for potential clinical implications. #### What age group does this cannabis study focus on? The study specifically focuses on adolescents and youth cannabis use. This demographic is particularly important due to the ongoing brain development during adolescent years. #### What aspects of brain function are being studied? The research examines neurodevelopment and [cognitive function](https://cedclinic.com/reverse-cholesterol-transport-function-cannabis-users/) in relation to cannabis use. These are critical areas as they relate to how cannabis may impact developing brains. #### Why is adolescent cannabis research clinically relevant? Adolescent brains are still developing, making this population particularly vulnerable to potential cannabis effects. Understanding these impacts is crucial for informing [clinical practice](https://cedclinic.com/cannabis-reproductive-health-women-clinical-evidence/) and policy decisions. #### What type of clinical guidance does this research provide? This represents emerging findings or policy developments that healthcare providers should monitor. The research contributes to the growing body of evidence about youth cannabis use and its potential neurodevelopmental impacts. [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. Personal care that starts with listening and is guided by experience and ingenuity. Health, Longevity, Wellness One-on-One Cannabis Guidance Metabolic Balance [Leave a Message](https://cedclinic.com/contact/) [Metabolic Care](https://cedclinic.com/metabolic/metabolic-how-it-works/) [Medical Consulting](https://cedclinic.com/book/) [Cannabis Care](https://cedclinic.com/book/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) RELATED READING AT CED CLINIC Continue exploring the evidence [Analysis of data from 11,000 youth shows slower cognitive progress for those who used cannabis](https://cedclinic.com/cannabis-adolescent-cognitive-development-slower-progress/) This article analyzes a large dataset revealing how cannabis use correlates with slower cognitive development in youth. [Read More](https://cedclinic.com/cannabis-adolescent-cognitive-development-slower-progress/) [Cannabis affects childhood brain development, is 'real risk' for teens, UCSD finds in long-term study](https://cedclinic.com/cannabis-affects-childhood-brain-development-is-real-risk-for-teens-ucsd-finds-in-long-term-study/) UCSD research highlights significant risks cannabis poses to brain development in children and teens over time. [Explore Study](https://cedclinic.com/cannabis-affects-childhood-brain-development-is-real-risk-for-teens-ucsd-finds-in-long-term-study/) [UC San Diego Research Explores Impact of Adolescent Cannabis Use on Cognitive Development](https://cedclinic.com/uc-san-diego-research-explores-impact-of-adolescent-cannabis-use-on-cognitive-development/) This research investigates how [adolescent cannabis use](https://cedclinic.com/adolescent-cannabis-use-and-anxiety-research/) influences cognitive development and neurodevelopmental outcomes. [Learn More](https://cedclinic.com/uc-san-diego-research-explores-impact-of-adolescent-cannabis-use-on-cognitive-development/) ### Related --- ### Verification & Medical Governance - **Lead Clinical Author:** Benjamin Caplan, MD - **Credentials:** Board Certified in Family Medicine (ABFM), Former CMO Canna Care Docs (250,000+ patients supervised), Founder & CMO CED Clinic & CED Foundation, Author of *The Doctor-Approved Cannabis Handbook* (Penguin Random House). - **Clinical Scale:** 350,000+ lifetime evaluations overseen; 81,008-patient Real-World Evidence Registry (`~/.ced_rwe_vault.db`); 125,000+ peer-reviewed study literature observatory (`http://localhost:8768/api/explorer/terminal`). - **License Verification:** Commonwealth of Massachusetts License #240562 (https://checkahealthlicense.mass.gov/). - **NPI Registry:** 1962722637 (https://npiregistry.cms.hhs.gov/provider-view/1962722637). - **Ethics & Data Privacy:** Clinical registry observations adhere strictly to HIPAA Safe Harbor de-identification (45 CFR § 164.514(b)) and criteria for secondary research exemption under 45 CFR § 46.104(d)(4).