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PositiveTip for

Pot and Driving Don't Mix

Risk of motor vehicle accidents raised by acute marijuana use.

A British meta-analysis of nine oberservational studies involving more than 49,000 participants revealed that driving under the influence of cannabis (marijuana) nearly doubles the risk of motor vehicle accidents compared to unimpaired driving. Acute cannabis consumption was determined by toxicologic analysis of whole blood or by self-reporting.

PositiveTip: Driving while under the influence of any mind-numbing substance--including marijuana--substantially raises the risk of accidents.