Disadvantages green tea | Top 8 major disadvantages to drink green tea

what is disadvantages of green tea

Disadvantages green tea | Top 8 major disadvantages to drink green tea

Disadvantages green tea: Today in this topic we will learn about the loss of green tea, how green tea can be harmful to our health. What can be the harm to our body by drinking this and what are the diseases that can be faced?


Green tea is made from the tea plant known as Camellia synesis, just like other true teas such as black tea, white tea, and oolong teas. It is one of the least processed true teas. All true teas contain caffeine and green tea is no exception. It has been used for centuries as a medicinal tool in Ayurveda from India and traditional Chinese medicine to treat everything from fever to heart disease.

Green tea boasts health benefits that include accelerated weight loss, cancer prevention, and blood pressure benefits. It has also been shown to prevent neurological diseases such as Alzheimer’s disease and Parkinson’s. Green tea has also been promoted as an alternative to coffee for people who are trying to reduce their caffeine intake. That’s because green tea contains an amino acid known as L-theanine, which helps to regulate blood sugar levels and slows the absorption of caffeine. This evens out the energy kick so you don’t get the jitter.

Research shows that green tea may help lower the risk of cardiovascular disease by decreasing LDL cholesterol and improving blood flow in blood vessels. These benefits are largely attributed to the anti-inflammatory properties of green tea. Long-term green tea consumption has also been associated with a lower risk of certain types of cancer including prostate cancer. Green tea helps you lose weight by accelerating fat oxidation and is a popular weight loss supplement.

Top 8 Disadvantages green tea:

  1. Stomach Problem.
  2. Headache.
  3. Sleeping Problem.
  4. Anaemia and iron deficiency.
  5. Vomiting.
  6. Dizziness and Convulsions.
  7. Bleeding Disorders.
  8. Risk for pregnancy and child.


Green tea may cause stomach irritation when brewed too strongly or consumed on an empty stomach . Green tea contains tannins that can increase the amount of acid in your stomach. Excess acid can lead to digestive issues including constipation, acid reflux, and nausea. Drink green tea with water that is too hot can exacerbate these side effects. Drink your green tea with water between 160 and 180 F.

Green tea can also cause diarrhea when consumed in large amounts. Caffeine produces a bad effect as it stimulates the colon muscles to contract and release more frequently. This results in more frequent trip to the bathroom and can cause upset stomach.

To avoid these side effects, do not drink green tea on an empty stomach. Instead, consume green tea after each meal. If you suffer from acid reflux disease, stomach ulcers, avoid green tea since it can increase acidity.


Green tea can cause headaches in certain individuals since it contains caffeine. People who suffer from migraines can consume green tea occasionally. However, you should avoid drinking green tea every day if you suffer from daily headaches. If you have caffeine sensitivity, avoid drinking green tea.


Green tea contains a compound that is bad for sleep that is caffeine. Green tea contains only small amounts of caffeine, but may still cause problems sleeping for people sensitive to caffeine. This is due to the fact that chemical compounds in green tea prevent the release of hormones such as melatonin, which helps in sleep.

Green tea also contains l-theanine, a chemical that helps to induce calm, but also increases alertness and focus—something that may disrupt sleep for some individuals. Some research shows that l-theanine is beneficial for sleep. However, these studies have mainly been conducted on individuals with disorders including ADHD and schizophrenia. Additional research shows that l-theanine may help sleep by lowering heart rate through the inhibition of glutamate receptors in the brain.

These benefits may be outweighed by the presence of caffeine in green tea—particularly in green tea. While research shows l-theanine is beneficial for sleep, there is no agreed upon dosage for it’s effectiveness in the medical community. While most people may benefit from a cup of green tea before bed, people with caffeine sensitivity should consume it no later than 5 hours before bed.


Green tea contains antioxidants that effects the iron absorption in the human body. A meta-analysis showed that this side effect can be a particularly dangerous for people who suffer from anemia or other disease where iron deficiency is present. One case study found that green tea caused anemia in a 48 year old businessman who consumed 1500 milliliters (6 cups) of green tea every weekday for years. To avoid this side effect, add lemon to your tea. The vitamin C in lemon promotes iron absorption, counteracting this side effect. Alternatively, you can consume gren tea one hour before or after a meal. This gives your body time to absorb iron without the inhibition caused by tannins. As a precaution, avoid green tea if you have anemia.


Excessive amounts of green tea can lead to  vomiting. That’s because green tea contains tannins that have been linked to nausea and constipation because of the way proteins bind in the intestines. Avoid consuming more than 4 cups of green tea each day if you are a seasoned tea drinker. If you’re just starting out with green tea, start with 1 or 2 cups per day and monitor your reaction. Only increase consumption if you experience no side effects.


The caffeine in green tea can cause you to feel dizzy or lightheaded when consumed in large amounts. Caffeine decreases blood flow to the brain and central nervous system, resulting in motion sickness. In rare cases, consumption of green tea can lead to confusion. In some cases, green tea consumption can also increase ringing in the ears. If you suffer from this. Avoid drinking green tea. Always drink green tea in moderate amounts and avoid if you are sensitive to caffeine. Research shows that the maximum tolerated dose in humans is equivalent to 24 cups of the beverage. As mentioned, most of these side effects are rare and occur only when consumed in excessive amounts or in individuals sensitive to green tea ingredients.


In rare cases, green tea can trigger bleeding disorders. Compounds in green tea decrease levels of fibrinogen, a protein that helps clot blood. Green tea also prevents the oxidation of fatty acids, which can lead to thinner blood consistency. If you suffer from a blood clotting disorder, avoid drinking green tea.


Tannins, caffeine, and tea catechins have all been linked to increased risks during pregnancy. Experts say that green tea in small amounts. No more than 2 cups per day  is safe during pregnancy and breastfeeding. Caffeine is passed through breast milk to infants so monitor your intake in coordination with your physician. Drinking more than 2 cups per day can lead to miscarriage and birth defects in children. Make sure to keep your caffeine intake below 200 milligrams per day.



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