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People who smoked pot heavily as teens had consistently lower IQs at age 38, a new study shows.
People who smoked pot heavily as teens had consistently lower IQs at age 38, a new study shows.

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    Buzzkill to your IQ score

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Buzzkill to your IQ score

Dr. Sanjay Gupta reports on a new study that finds smoking marijuana as a teen permanently lowers IQ scores as an adult.

Buzzkill to your IQ score

Dr. Sanjay Gupta reports on a new study that finds smoking marijuana as a teen permanently lowers IQ scores as an adult.