15 Green Tea Side Effects – Why Consuming It In Excess Is Bad

Green tea is one of the healthiest drinks. It is sourced from the plant Camellia sinensis. Green tea contains an antioxidant called EGCG that helps fight various diseases like cancer, heart disease, and obesity . But new research shows that drinking too much green tea daily may have side effects.


In this article, we will address 15 green tea side effects, along with discussing the ideal dosage and other precautions you need to take. Let’s begin!

Green Tea Side Effects

Drinking too much green tea has side effects. Here is a list of the 15 adverse effects you want to be wary about.

15.Digestive Distress

green tea causes digestive troubles

The caffeine content of green tea is the reason behind the problems in the digestive system. Drinking green tea might trigger nausea, vomiting, stomach pain, bloating, indigestion and flatulence. The immediate side effect of green tea on the gastrointestinal system is stomach pain and acute acidity.

14. Iron And Anemia Deficiency

Excessive consumption of green tea causes a deficiency of iron and results in anemia. The primary component of green tea is a polyphenolic compound named EGCG, which inhibits the action of the enzyme myeloperoxidase which results in internal inflammation. The tannin contained in green tea suppress the absorption of minerals like iron from the digestion of food.

Taiwanese research on green tea has revealed that excessive consumption of the tea drastically decreases the levels of hemoglobin in the blood. It causes anemia and generally regarded as one of the worst side effects of green tea on periods.

The polyphenolic compounds contained in green tea bind to the interstitial cells and thereby prevent the iron from entering the bloodstream. It results in the excretion of iron from the body and consequent attack of anemia and irregular periods.