ScienceContemporaryglobalhigh confidence

High caffeine doses during pregnancy might increase the risk of premature delivery, low birth weight, and miscarriage.

Notes on verification

Low birth weight association is well-supported by multiple dose-response meta-analyses. Miscarriage link is plausible at high doses but contested (ACOG and Tommy's note lack of definitive causal evidence). Preterm birth is the weakest link, with major meta-analyses finding no significant association. Overall hedged 'might increase' framing is reasonably supported but masks heterogeneity across the three outcomes.

Sources