Drinking water daily thinking it is healthy can become harmful – Obnews
Samira Vishwas December 11, 2025 09:25 AM

Green tea is considered a healthy drink. It has become people’s choice due to weight loss, increasing metabolism and providing antioxidants. But nutritionists and health experts say that drinking green tea in excessive amounts daily can cause many side effects. People who drink it regularly considering it to be healthy should take special care.

7 major side effects of green tea:

Sleep disturbance:
Caffeine is present in green tea. Consuming excessive amounts may affect sleep quality, leading to sleep disturbances and frequent awakenings during the night.

stomach problems:
Drinking green tea on an empty stomach can cause problems like stomach irritation, acidity or indigestion. This is especially dangerous for people who already have stomach problems.

iron deficiency:
Green tea contains tannins, which may reduce iron absorption. Excessive consumption for a long time can cause problems like iron deficiency and anemia.

Effect on heart health:
Drinking too much green tea can increase heart rate and affect blood pressure. Heart disease patients should take special care.

Risks for pregnant women:
Drinking excessive green tea during pregnancy can have negative effects on the fetus due to the caffeine. Experts say that pregnant women should take it only in controlled quantities.

Problems with teeth and gums:
The acids and tannins present in green tea can cause stains on teeth and increase gum problems if consumed in large quantities over a long period of time.

Changes in mood and energy:
Drinking excessive green tea can sometimes cause problems like restlessness, irritability and headache. This is mainly caused by excessive consumption of caffeine.

Expert advice:

Do not consume more than 2–3 cups of green tea daily.

Avoid drinking it on an empty stomach, it is better to take it with breakfast.

If anyone has heart disease, stomach problems or sleep problems then consult a doctor before consuming green tea.

Avoid adding too much flavor to the drink, as excess sugar or milk powder may reduce its health benefits.

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