An Overview of Green Tea and Pregnancy
It is not known whether
green tea is safe for pregnant women. There are some concerns about green tea use during pregnancy due to the caffeine content and issues with
folic acid.
Is Green Tea Safe During Pregnancy?
Green tea contains caffeine, about 10 to 80 mg per cup. Caffeine during pregnancy is a controversial issue. Many women completely cut out caffeine during pregnancy, while others take a moderate approach, limiting their caffeine to a reasonable amount. Studies have also shown conflicting results
(see Caffeine and Pregnancy for more information). If you and your healthcare provider have decided that you should avoid caffeine during pregnancy, then you should avoid green tea.
There is some concern that some of the components in green tea may affect folic acid. Some of the polyphenols in green tea may inhibit the enzyme that converts folic acid into its active form in the body. There is a little evidence suggesting that green tea consumption may increase the risk of
spina bifida, a birth defect that is linked to low folic acid intake.
If you are pregnant, it is always a good idea to have a discussion with your healthcare provider before drinking green tea or taking green tea supplements. If your healthcare provider recommends that it is okay to drink green tea, a modest approach is probably best. It is probably not a good idea to consume several cups (or more) of green tea per day.