Side Effects of Drinking Green Tea

Green tea bag content

Ever since the Green Tea has started being widely consumed in Ancient China some 5000 years ago, it was promoted as a great medicinal herb, capable to rejuvenate our metabolism, regulate body temperature, blood sugar, prevent fatigue, help heal wounds and much more. However, during its rise in popularity and spreading all across the four corners of the world, scientists and population started noticing some rare side effects that when not spotted in time could cause problems and illnesses that could seriously impact the health of the user. Here you can find out more about causes of those problems and what are their effects on your body.

Upset stomach – If green tea is not properly brewed, it can cause heartburn and upset stomach. To avoid this problem, you need to make sure that brewing of the tea is done well below the boiling temperature of the water. The most perfect temperature is in the range of 160-180 degrees Fahrenheit (71 – 82 degrees Celsius).

Allergic reaction – Even though this is rare, some people may develop adverse allergic reaction to Chinese green tea. Effects of such allergic attack can be closing up of the throat, difficulties breathing, swelling of the lips, tongue and face and increased body temperature.

Iron deficiency anemia – Consumption of green tea can reduce the body’s iron absorption by 25%. This cans create significant iron deficiency in your body which can strongly affect people who are suffering from anemia. Reduction of body iron can be prevented by adding lemon into your tea.

Caffeine sensitivity – Caffeine is one of the ingredient of the green tea, and even though it’s not present in large quantities you can start feeling its effects if you drink 6 cups per day. Some of those caffeine-related symptoms can be restlessness, increased heart rate, elevated blood pressure, anxiety, irritability, difficulty sleeping and more.

Pregnancy risk – Green tea is not advisable to be consumed in large quantities by pregnant women, especially during early pregnancy. Such excessive intake is linked to various birth defects which are caused by caffeine, tannic acid and catechins tea ingredients.

Interference with medication - Small amounts of vitamin K in green tea can make anticoagulant drugs (like waffarin) less effective. If you are taking these types of prescribed drugs, restrain from drinking green tea.

Various effects of excessive tea intake – According to several studies, 6 cups of green tea is considered to be too much for regular daily consumption. Side effects of such large intake can be frequent urination, Diarrhea, vomiting, dizziness, headaches and loss of appetite.

Note: All figures are approximate; this site does not provide medical advice, diagnosis or treatment.