Subscribe to Boldsky

10 Warnings And Precautions With Green Tea

Having green tea has become a health trend now a days. People know the health benefits of green tea and have it indiscriminately. It is a human nature to use everything in excess when we know it's good for health.

There are many negative side effects of green tea that we will share with you today. You must have a look on some warnings about green tea.

Foods For Weight Gain And Body Building

However, as it is well said that excess of everything is bad, the same applies with the excess consumption of green tea. Green tea also has many side effects such as it can cause iron deficiency and many more health issues.

How much green tea should I drink? Today, Boldsky will share with you some negative side effects of green tea . Have a look at some green tea harmful effects.


Contains Caffeine

Green tea also contains some caffeine and excess consumption ( three to five times a day) can cause insomnia, excessive urination, irregular heart beat, stomach upset, nausea, diarrhea and ringing in ears.

Avoid Green Tea On Empty Stomach

You should not have green tea while fasting or on an empty stomach as it can cause toxicity to the body. It causes kidney, liver and digestive track toxicities. This is one of the negative side effects of green tea.

It Increases Stomach Acids

Green tea can aggravate peptic ulcer and acidity as it can increase the acidity of stomach if taken before meals. It can cause pain in stomach, constipation and nausea. So take it after meals always.

Health Problems

If you are allergic to any of the ingredients present in green tea, you must avoid it. You should consult a doctor before taking green tea if you are on some medication such as warfarin (blood thinning medication).

Interference With Medication

As green tea in very effective healing herbal tea and kills cancer cells. But at then same time it may decrease the effectiveness of cancer medicine such as bortezomib. This is one of the green tea harmful effects.

Iron Deficiency

The tannins present in green tea prevent the absorption of iron supplements and iron from foods into the blood thus rendering them ineffective. To avoid iron deficiency anaemia, you must not take green tea in excess amounts.

Miscarriage And Harmful Effects To New Born

Is green tea safe in pregnancy? You must avoid green tea or at the maximum you can ave one cup of green tea while you are pregnant and nursing your baby. As in pregnancy having too much of green tea can increase the risk of miscarriage and in lactation it may cause harmful effects to your baby.

Osteoporosis (Bone Thinning)

Excess consumption of green tea can cause elimination of calcium from bones and increases it's excretion in urine. You may suffer from iron deficiency and must take iron supplements to compensate the loss.

Increase The Risk Of Glaucoma

It a condition of eyes in which the pressure of eyes increase (intra ocular pressure) and can lead to blindness. Having green tea in excess can aggravate this condition in people already suffering from glaucoma.


If you are already suffering form sleeplessness, then you must avoid too much intake of green tea. As green tea contains caffeine which stimulates brain and keeps you awake. This is one of the precautions with green tea.

    Story first published: Wednesday, April 1, 2015, 13:02 [IST]
    Subscribe Newsletter
    We use cookies to ensure that we give you the best experience on our website. This includes cookies from third party social media websites and ad networks. Such third party cookies may track your use on Boldsky sites for better rendering. Our partners use cookies to ensure we show you advertising that is relevant to you. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on Boldsky website. However, you can change your cookie settings at any time. Learn more