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Researchers Solve Longtime Mystery Of How Marijuana Causes Memory Loss

• arclein
But in a study of mice, researchers were surprised to find that THC increased the levels of an enzyme called cyclooxygenase-2 (COX-2) in the hippocampus. The COX-2 increase in the brain cells seems to turn down memory-making abilities by decreasing the cell's ability to make connections with other brain cells — and these connections are what underlay our memories.

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