It’s Time for a New Discussion of Marijuana’s Risks

Regardless, driving while impaired is a terrible idea. Although we have good tests to determine if people are under the influence of alcohol, no such tests are currently available for marijuana, making enforcement more difficult.

Pregnancy effects

Babies born to women who smoke pot during pregnancy are more likely to be underweight, delivered premature and admitted to a neonatal intensive care unit, according to a 2016 systematic review. But there were no links seen for changes in birth length, head circumference or congenital malformations. There’s limited evidence for pregnancy complications for mothers, and there’s not enough evidence to comment on much else about babies and their outcomes.

Memory and concentration

There’s moderate evidence, from many studies, that learning, memory and attention can be impaired in the 24 hours

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