The harmful side effects of green tea

The side effects of green tea you should be aware of

The harmful side effects of green tea
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In spite of being an amazingly healthy beverage, green tea has its own dark side. Let's explore them here.


Many of us are switching to green tea from traditional tea or coffee as our relaxation drink due to many obvious health benefits. For the health conscious types, green tea is a way of saying no to sedentary life style. But would you really believe if you are told green tea also has its share of side effects. Many of you would be simply shocked. While we cannot deny the amazing health benefits of green tea, like weight loss, reducing the risk of cancer and benefits against cardiovascular diseases, some of the side effects of green tea cannot be totally ignored. So let us have a look at what they are. 


Although green tea contain as half as the caffeine present in coffee, frequent consumption can lead to high caffeine intake.

Therefore, it should be consumed in moderation and matcha green tea should be avoided otherwise this may have harmful health hazards like insomnia, restlessness, stomach irritability, lack of appetite, and many more.

Low iron absorption and anemia

Green tea interferes with the process of absorption of non-heme iron by the body which is primarily found in our food like leafy greens, other vegetables, dairies and poultries. This can however be overcome to some extent by adding vitamin C like lemon juice to green tea which enhances iron absorption.

Increased palpitation and heart-beat

Irregular heartbeat is caused due to caffeine which stimulate the contraction of heart muscles.

Low levels of testosterone 

Green tea especially mint or spearmint tea lowers the testosterone levels. Therefore, higher and regular consumption may lead to infertility and poor libido in men.

Heartburn and acidity

The release of acids is the primary reason for heartburn and acidity. Therefore, green tea should be consumed in moderation to avoid heartburn.

Risk during pregnancy and lactation

Like traditional tea, green tea also increases the risk of miscarriage in a pregnant woman. It should be consumed in moderation, that is, not more than twice daily. However, the best would be to avoid it altogether throughout the term of pregnancy. Moreover, green tea should also be avoided during lactation period so that the caffeine does not pass on to the infant.

Harmful for liver

A type of polyphenols known as catechins found in green tea may be harmful for the liver. Although, green tea is known for its antioxidant properties, excessive consumption may cause severe liver damage in the long run. It prevent liver functions like metabolism, and cause liver diseases like hepatitis, jaundice and other liver problems.

The other side effects of excessive green tea consumption are headache, insomnia and other sleep disorders, diarrhea and convulsions.

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