[#item_full_content] In an exploratory analysis of 8,706 U.S. children aged 9 to 11, prenatal exposure to both cannabis and tobacco was associated with modestly lower fluid cognition scores compared with cannabis-only exposure or neither substance. Differences from tobacco-only exposure were not statistically significant, nor were differences in crystallized cognition, and the observational findings could not establish causation. 
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Children exposed to cannabis and tobacco before birth scored lower on thinking tests
ByPot Shop News
November 4, 2026