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You're reading: Pot smoking, other drug use not tied to middle-age mental decline
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The study, carried in the American Journal of Epidemiology, tested the mental function and memory of nearly 9,000 Britons at age 50 and found that those who had used illegal drugs as recently as in their 40s did just as well, or slightly better, on the tests than peers who had never used drugs.

Marijuana was by far the most common indulgence for the participants — who were surveyed at age 42 about current or past drug use, then tested at age 50 — with six percent saying they had used it in the past year, while one-quarter said they had ever used it.

Other drugs they were asked about included amphetamines, LSD, hallucinogenic mushrooms, cocaine and ecstasy — with anywhere from three percent to eight percent of study participants saying they’d ever used those drugs.

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