Jan 21, Medical News Today

US researchers found that pregnant women who have large doses of caffeine every day, for example from coffee, tea, hot chocolate or caffeinated soda or fizzy drinks, have an increased risk of losing their baby through miscarriage. The researchers suggest women stop drinking caffeine while pregnant.

The study was conducted in in San Francisco by the Kaiser Permanente Division of Research and is to be published this week in the American Journal of Obstetrics and Gynecology.

The elevated miscarriage risk appears to be due to caffeine and not coffee alone because caffeine from other sources like tea, hot chocolate, and caffeinated soda or fizzy drinks also raised the risk.

Dr De-Kun Li, who is a Research Scientist at the Division of Research, Kaiser Permanente, Northern California, led the investigation. Kaiser Permanente is the largest insurance group in the US. Li's co-authors were Xiaoping Weng and Roxana Odouli.

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