Be careful: Here are the side effects of green tea


Green tea is a popular drink for its health benefits, including losing weight and detoxifying the body. However, it is advisable to moderate its consumption. Here are the side effects of drinking green tea.

Green tea is native to the mountainous regions of China, Myanmar and Thailand, it is very popular for its many therapeutic virtues, among which:

  • Prevent cognitive disorders
  • Reduce cholesterol
  • Reduce hypertension
  • Prevent certain cancers
  • Losing weight
  • Detoxify the body
  • Stimulate the blood circulation


Green tea contains many beneficial substances for the body. Indeed, it is rich in antioxidants, including catechins (up to 30%) and epigallocatechin-3-gallate (EGCG) (up to 75%). Tea also contains caffeine and theanine. This last substance, according to scientists, has a stimulating effect on the immune system and relaxes the nervous system. Here are some of the benefits of this drink:

Heart attack

According to the University of Maryland Medical Center, researchers estimate that consuming 3 cups of green tea a day would help reduce the risk of heart attack by 11%.

The cancer

The antioxidant content of green tea would help prevent the onset but also stop the growth of cancer cells. Indeed, tea contains antioxidants called catechins, epigallicatechin-3-gallate (EGCG) and theanine that have anti-cancer properties by inhibiting their proliferation.


The antioxidant content of green tea helps clean blood vessels and prevent lipid build-up in the walls. An epidemiological study showed that people who drank tea regularly had lower bad cholesterol levels than those who did not drink.

Losing weight

It is well known, green tea is a slimming ally very effective. Researchers at the University of Pennsylvania have tried to prove that. They did their research on mice that were all obese. To make them lose weight, the researchers imposed sport and a regular consumption of green tea. After 16 weeks, the scientists noted a 27.1% decrease in abdominal fat and a 36.6% decrease in body fat. However, it is important to combine exercise and a balanced diet for lasting and effective results.

Side effects of drinking green tea

It is well known, we should not abuse even good things, this is particularly the case for green tea. It is therefore advisable to drink 3 cups of green tea per day maximum, after or before your meals (infuse 2.5g of tea leaves in a cup of warm water, ie 250 ml). However, if you exceed this average, you may develop some disorders such as:

  • Headaches
  • Stomach upset
  • Excessive agitation
  • Nausea
  • A loss of appetite
  • Iron deficiency
  • Tremors
  • Nervousness
  • Insomnia
  • Irregular heartbeat
  • Affect the blood sugar level (for diabetics)

In addition, green tea is also not recommended for many people who suffer from certain disorders. For example, for people with liver disorders, dark urine or chronic abdominal pain, it is advisable to seek the advice of their doctor before using it. In addition, it is also advisable for pregnant women who are breastfeeding, people who suffer from iron deficiency or who are undergoing chemotherapy to seek the advice of a specialist. Finally, green tea is not recommended for people with hypertension.

Organic tea

In addition to moderate consumption, it is also important to consume organic tea. Indeed, tea that you can find in the supermarket can contain a high content of pesticides. These are chemicals used to neutralize insects and fungi. Laboratory tests have reported that this ingredient would hide other substances such as:

  • Biocides, substances that can be found in water disinfectants, antiparasitics or antibiotics.
  • Herbicides, products used to hunt weeds.
  • Mineral oils present in recycled paper.

In addition, Canadian researchers at the University of Alberta have discovered that green tea has a high concentration of heavy metals such as aluminum, lead or arsenic. According to scientists, the concentration of these metals would increase further when

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