Does Cannabis Harm Your Brain? The Science is In!

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🚨 Does cannabis use have long-term effects on your brain? A new JAMA Network Open study (2025) examines how recent and lifetime cannabis use impact brain function—especially working memory. Using MRI scans of over 1,000 young adults, researchers found that heavy cannabis users showed reduced brain activation in key areas responsible for memory and cognition.

🧠 Key Findings:

Heavy cannabis users (1,000+ lifetime uses) had lower brain activation in the prefrontal cortex and insula, key for working memory.
Recent cannabis use was linked to temporary cognitive impairment, but not as strongly as lifetime use.
No significant effects on other cognitive functions, but working memory was consistently impacted.
🔬 What does this mean for cannabis users?

Long-term use may have lasting cognitive effects, even after stopping.
Memory and focus may decline with frequent use due to CB1 receptor changes.
Athletes, students, and professionals relying on sharp cognition should be mindful of cannabis intake.
💭 What are your thoughts? Comment below! Should people be more cautious about cannabis use?

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