Home / Healthy Drinks / 20 Side Effects of Consuming Green Tea

20 Side Effects of Consuming Green Tea

Green tea is one of the oldest herbs known to world. It gained popularity quickly in the West because of its health benefits where weight regulation is included which is one of the most popular.

Some of these advantages are supported by studies. But you must take into account its side effects.

It is known as a powerful ally for health if consumed in moderation.

But if you suffer from stomach problems, iron deficiency, low tolerance to caffeine, are pregnant or lactating and suffer from anxiety disorders, you should take it in moderation, as it can have very negative side effects on your health.

If you drink too much green teas (more than five times a day) you should keep in mind that it is contraindicated by specialists. People who have a low natural tolerance to caffeine suffer these symptoms even when they ingest small amounts.

These are some of the side effects caused by green teas in your body

Stomach aches

The teina of green teas increases the acidity of the stomach , so consuming it can cause you many stomachaches, nausea or constipation. For this reason, green teas is not consumed on an empty stomach in many Eastern countries.

A recent study on the side effects of green teas on normal consumption found that consuming green tea on an empty stomach can affect the liver.

It is best to drink green tea after a meal or between meals . Especially if you suffer from reflux or ulcer you should not consume large amounts of green tea. A 1984 study concluded that tea is a potent stimulant of gastric acid, which must be reduced with milk or sugar.

Often, poor processing can have very adverse side effects. Green tea should be consumed at a temperature between 160 degrees and 280 degrees Fahrenheit . Excessively hot water can cause heartburn or upset stomach.

Iron Deficiency

Green tea reduces the absorption of iron from meals. This occurs because polyphenols bind to non-ferrous iron (of animal origin) by 25%.

To counteract this, add a little lemon to the infusion. Vitamin C increases the absorption of iron by the body. You can take the hot drink with foods rich in vitamin C like peas, broccoli and tomatoes on your steak. If you suffer from deficiencies such as anemia, we recommend you consume the tea between meals.


For some doctors green tea is considered a safe drink for patients with mild headaches. However, if you suffer from chronic daily headaches you should avoid consuming this drink . Studies have shown that caffeine is a risk factor for chronic onset of headache, and although green tea contains much less caffeine than coffee or other tea, it is best to avoid it.

Problems sleeping and anxiety

No matter how little caffeine green tea contains, do not take it at bedtime . It can block the chemicals that induce sleep in the brain and increase adrenaline production. In addition, it exerts obvious side effects on anxiety and sleep, which vary according to the sensitivity of each person.

Green tea also contains the amino acid L-teina, which has the ability to soothe you but also keeps you alert and helps you concentrate, which is contraindicated for a good night’s sleep.

Problems of cardiac arrhythmias

Caffeine in green tea can cause irregular heart jolts , so if you suffer from cardiac arrhythmias avoid this drink.

Threw up

Because caffeine affects the movement of food through the esophagus , contraction and alternating relaxation of muscles can cause nausea.


Caffeine has a laxative effect . It contributes to peristalsis (the movement of food through the digestive system). It stimulates the muscles of the colon to contract and then relax, resulting in a greater need to move your bowels.

Muscle contractions

Thanks to caffeine, green tea can affect your body muscles by contractions.


Caffeine is known to increase heartburn . This causes a lot of discomfort and acidity.


It is well known that caffeine can decrease the blood flow in the brain , which can cause dizziness.

Ringing in the ears

Caffeine containing green tea can affect your balance and ringing in your ears.


Experts say that caffeine estimates the central nervous system and activates the neurons negatively when consumed excessively, causing seizures.

Coagulation Disorders

As one of its side effects green tea could increase the risk of bleeding.


Consuming this drink could interfere with controlling blood sugar . If you drink green tea and have diabetes, watch your blood sugar carefully.


One of the side effects of drinking green tea is that it increases the pressure inside the eye . The increase occurs in 30 minutes and lasts for at least 90 minutes.

High blood pressure

Caffeine in green tea could raise blood pressure in people with high blood pressure . However, this does not appear to occur in people who regularly drink green tea or other caffeine-containing products.

Liver disease

Green tea extract supplements have been linked to several cases of liver damage . Green tea extracts could worsen liver disease, as caffeine in the blood can build up and last longer.


Drinking green tea can increase the amount of calcium that is emptied into the urine , this is a side effect that leads to deterioration of bone health and osteoporosis, especially in those who might be predisposed to it due to other factors.

Caffeine should be limited to less than 300 mg per day (about 2-3 cups of green tea). It is possible to compensate for the loss of calcium caused by caffeine by ingestion of calcium supplements.

You know, you drink green tea very sparingly. Remember that all excesses are bad.

Check Also

The Natural Smoothie That Will Help You Recover Up to 10 Years of Lost Insulin …

Today our food or most of us have a very poor diet of vitamins and …

Powered by themekiller.com