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Observational study shows weak evidence for adverse cognitive effects of low prenatal alcohol and cannabis exposure, indicating limited risk.
Little evidence emerged for negative effects of low PAE, PCE, or combined exposure on adolescents' cognitive development after accounting for sociodemographic factors. Light drinking in families with social features positively associated with cognitive ability may result in few negative consequences. This study is the first to demonstrate weak evidence for adverse differential and combined low-level PAE and PCE effects on the development of adolescent cognition.
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Paige et al. (2026) studied this question.
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