Caffeine is probably the most used psychoactive substance in history. It was believed that a small dose would not harm even pregnant women.
There have been studies done on this topic (EFSA, American College of Obstetricians and Gynecologists, British Medical Examiner's Office.) and found that the safe level of caffeine is 200 mg per day (about 2 cups).
But a professor from the University of Reykjavik, Iceland, decided to investigate the issue further, finding 1,261 articles linking caffeine and caffeinated beverages to pregnancy outcomes. And he came to the conclusion that there is significant cumulative evidence of a link between maternal caffeine consumption and various negative pregnancy outcomes: miscarriages, stillbirths, acute leukemia in children, obesity in children, but not premature birth.
Therefore, the professor notes that modern recommendations regarding the use of caffeine during pregnancy need a radical revision. And women planning pregnancy or already pregnant should avoid caffeine.
Time will tell if there really is a connection. Medicine is a relative thing, so informed means armed.
Obstetrician-gynecologist Furdas Nataliya