Anything in excess is bad and so is green tea.It is good for health only if consumed in moderation. It contains caffeine and excessive caffeine intake can lead to a variety of problems, including the following:
Stomach Problems
Green tea contains tannin which increases stomach acidity and causes stomachache, nausea or constipation. The best time to drink green tea is after a meal or between meals; drinking green tea with an empty stomach can affect the liver.
Iron deficiency and anemia
People who have iron problems or are anemic should not consume too much of green tea because it reduces the absorption of iron from food.
Headaches
Because of caffeine, it might cause mild to a severe headache and apart from that iron deficiency can also cause a headache. it can even cause dizziness.
Cause Insomnia
Another problem with green tea is that due to caffeine it disturbs your sleeping habit which further makes you lazy.
Vomiting
Excessive intake of caffeine, including that from green tea, can trigger nausea and vomiting.
Negative effects during pregnancy
Pregnant and lactating women must limit their green tea intake as it may pass into breast milk and cause insomnia in nursing infants.
High blood pressure
Caffeine in green tea might increases blood pressure.
Allergic effects
Large intake of green tea leads to rashes on the body and also causes swelling of the mouth and lips.
Increase in heartbeat
It speeds up the heart rate causing irregularly fast heartbeat might even cause chest pain. A change in your normal heart rate can lead to a serious threat to your health.
