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Causal effects need to be studied further, with one way of assessing causality being Mendelian randomization analysis (MR)

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LEARN MORE: Learning and Memory Performances in Adolescent Users of Alcohol and Marijuana: Interactive Effects We did point out that smoking a blunt (marijuana wrapped in tobacco leaves) or a spliff (tobacco inside a joint) mixed the cannabinoids found in marijuana with nicotine, the gateway drug, potentially leading to more serious consequences

"She was scheduled to film, but they reworked the schedule to focus on scenes without her character," a source told The Sun

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