Lukes hospital in st. Latest research to examine the risk of caffeine consumption during pregnancy reveals that women who said they drank more than two cups of coffee per day had nearly double the risk of miscarriage compared with women who consumed no caffeine. Sherman silber director of the infertility center at st. Expectant mothers have been confused for years about whether drinking that morning cup of joe could do harm to their unborn child. Theres lots of things we cant control but this is one thing that you can. De kun li primary study investigator said that he hopes the research will convince doctors to tell their pregnant patients to avoid coffee completely.