Caffeine is not safe for pregnant women and their future children. Researchers from Wuhan University in China claim that if a pregnant woman drinks 2 cups of coffee a day, chances are that she could damage the liver of the unborn child.

According to The Daily Mail, too much caffeine slows down development of the liver of the fetus and increases a child's risk of developing fatty liver disease and diabetes in adulthood.

Experts remind that there is caffeine in not only coffee, but also in tea and other beverages. There are about 95 milligrams of caffeine in one cup of coffee, and 20 milligrams in one cup of black tea.