Green tea is one of the oldest herbs known to humanity. It originally became popular in the East, but it quickly gained popularity in the West as well due to its amazing health benefits. Some of the benefits are even supported by scientific studies, but the tea has its side-effects, so it should be consumed with caution.
When consumed in moderation, green tea is a great ally for our health. It can improve your health on so many levels, but should be taken in moderation in cases of low caffeine tolerance, digestive problems, iron deficiency and anxiety. Drinking too much of the tea can worsen the symptoms of these conditions and further endanger your health. Furthermore, the tea is not recommended for pregnant or lactating women.
Here are some of the adverse side-effects of consuming too much green tea:
Green tea raises the acidity in the stomach, so consuming it often can cause constipation, nausea or stomachache. This is why it’s never consumed on an empty stomach in the East. A recent study on the adverse side-effects of green tea showed that it can affect the liver if consumed on an empty stomach. Experts suggest drinking tea between or after meals for best results, and avoiding it if you’re suffering from ulcers or acid reflux. According to one study, the tea boosts the production of gastric acid in the stomach, which can worsen your situation with ulcers. The temperature of the tea is important as well – for best results, it should be consumed between 160-280 degrees Fahrenheit.
Green tea lowers the iron absorption from the food we eat as the polyphenols bind to non-ferrous iron by about 25%. In order to prevent this, you can add a bit of lemon juice to the tea – the vitamin C in lemons will boost the production of iron and prevent further problems.
Some doctors recommend green tea for mild headaches, but others are against it. If you’re suffering from chronic headaches and migraines, we strongly suggest avoiding green tea. Experts warn that caffeine is a risk factor for headaches, so it’s best to stay away from it.
Anxiety and sleeping problems
No matter the small amount of caffeine it contains, green tea can still cause anxiety and sleeping problems. It does this by blocking the activity of chemicals that boost adrenaline production. The tea contains a compound known as L-theanine, which can keep you alert and unable to fall asleep.
Irregular heart rhythm
Drinking too much green tea can cause your heart to beat at an irregular rate, so it’s not recommended for arrhythmia patients.
Vomiting is a known side-effect of green tea as the caffeine affects the movement of food up the esophagus as well as the muscles in the organ.
Too much green tea has been known to cause diarrhea. The tea causes peristalsis in the digestive system and stimulates the contraction and relaxation of the colon, resulting in the problem.
The caffeine in green tea can contract your muscles often and make you feel tired.
Increases acidity in the body
Caffeine can raise the acidity in your body and cause heartburn and acid reflux as well.
Caffeine can reduce the blood flow to the brain, which may result in dizziness.
Drinking green tea often can cause ringing in your ears and may affect your balance.
Some experts say that by activating the central nervous system, green tea may cause seizures.
Green tea reduces the ability of the blood to clot, resulting in higher risk of bleeding.
Consuming green tea often may interfere with the action of your pancreas and disrupt your blood sugar levels, effectively raising the risk of diabetes.
One of the worst side-effects of green tea is its ability to raise pressure inside the eye, which will also raise the risk of glaucoma.
High blood pressure
Drinking too much green tea can raise your blood pressure even further if you’re already suffering from the problem. This means that it will increase the risk of cardiovascular problems as well.
Green tea supplements have been related to liver disease, so it may be best to stay away from them.
Drinking green tea will increase the amount of calcium flushed through the urine, which could result in greater risk of osteoporosis.
As you can see, drinking too much green tea does have a variety of adverse side-effects. The RDA amount of caffeine is less than 300 mg. per day, which is about 2-3 cups of the tea. Stick to it, and you won’t put your health at risk.
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