Stop Drinking So Much Green Tea! 7 Side Effects You Should Know About

You should not drink a lot of green tea as instead of benefiting, it can cause side-effects. Get details inside.

Chanchal Sengar
Written by: Chanchal SengarPublished at: Jul 14, 2022Updated at: Jul 14, 2022
Stop Drinking So Much Green Tea! 7 Side Effects You Should Know About

Green tea is loaded with antioxidants named catechins that makes it a potent health drink. Most people consume green tea for weight loss but it also aids blood glucose regulation, strengthens immunity and offers disease prevention. While drinking 1-2 cups of green tea daily is beneficial, overconsumption might take a toll on your health.

Here are some side-effects associated with excess consumption of green tea that you should be wary of.

Side Effects Of Green Tea

Digestive problems

One of the first side-effects of green tea as per the Pharma Journal is that you may witness upon drinking more than three cups of green tea a day is digestive trouble. Gas, acidity, constipation, burning sensation in the stomach, and indigestion can be caused. Tannins present in green tea are responsible for triggering digestive problems. It shouldn’t be consumed in excess. In the worst case, it may even lead to diarrhea.

Also Read: Never Drink Green Tea At These Times, It May Prove To Be Disadvantageous


Green tea is best known to relieve headache but did you know that it can give you a headache if you consume it? It can worsen to such an extent that green tea can even trigger migraine. People who are allergic to caffeine are highly likely to get chronic headaches after over consuming green tea.

Side Effects Of Green Tea


Tannins in green tea are found to trigger nausea and constipation. Excess tannins can bind proteins in the intestine that may make you feel nauseous and constipated. Stop consuming more than three cups of green tea in a day to avoid this condition. Also, add lemon juice to your green tea to prevent nausea if you are a seasoned tea drinker.

Sleep problems

Drinking more than three cups of green tea in a day can hamper your sleep cycle. Even though it has less caffeine as compared to tea and coffee, excess green tea can be really bad for your sleep. This can alter melatonin (a sleep-inducing hormone) that may obstruct your sleep cycle and keep you awake for long hours.

Also Read: Post COVID Insomnia: Why It Happens And What To Do About It

Side effects of green tea on sleep

Blood pressure fluctuations

Consuming green tea in excess can cause irregular heartbeats due to the caffeine present in it. When you over consume green tea, it may lower your blood pressure. Also, if you are a heart patient, do not have more than two cups of green tea. Make sure to consult your doctor if you experience any issue upon green tea consumption.(Click here to know how to make green tea healthier)

May weaken bones

Excess consumption of green tea may weaken the bones of people who are deficient in calcium. There are conflicting views of experts on this as various studies favour green tea for prevention from bone loss. While some studies mention that overconsuming green tea might increase the risk of osteoporosis. So, it is better to have green tea in regulation to not risk your bone health.

May cause anemia

There are antioxidants in green tea that are good for general health. However, when antioxidant levels get high, it might affect the absorption of iron in the body. If you drink more than four cups of green tea every day, you might become anemic. 

Consuming green tea has many health benefits but we should not ignore the side-effects that may be caused if you consume green tea in excess. Therefore, consume green tea in limited quantities.

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