Caffeine during pregnancy increases miscarriage risk, study suggests

A new study by the Kaiser Permanente Division of Research suggests that a high intake of caffeine during pregnancy may lead to an increased risk of miscarriage, regardless of its source.

While previous research showed a link between caffeine consumption and miscarriage, this is the first study to thoroughly control for morning sickness, which typically causes many women to avoid caffeine, explained De-Kun Li, MD, Ph.D., an investigator with the Kaiser Permanente Division of Research and lead investigator of the study. “This study strengthens the association between caffeine and miscarriage risk because it removes speculation that the association was due to reduced caffeine intake by healthy pregnant women,” Li said.

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