Green Tea Extract: Benefits and Possible Side Effects


Nowadays, Green tea is in popularity due to the essential health benefits of it. Green tea has a very long history in being used by the Chinese as medicine to treat headaches, body ache, poor digestion, and improve well-being and life expectancy. In recent years, scientific research has also suggested that green tea can help in weight loss.

Green Tea Extract: Benefits and Possible Side Effects

The green tea diet is different from all other tea diets because the green tea liquid is extracted by steaming the leaves of the Camellia sinensis plant in opposition to full oxidation. So, the green tea diet conserves a lot more antioxidants for the body to use as a result. Green tea contains a natural ingredient which makes it a healthy drink; anyone can drink with no long term harmful side effects, unlike other drugs for weight loss.

Green tea is not fermented which is the main difference of it from black tea. When the extraction of green tea is carried out, the active ingredients remain unaltered in the tea. Conventionally, green tea was used for detoxification, digestion, depression, immune enhancement, and to prolong life.

Green Tea Extract: Benefits and Possible Side Effects

Green tea has been used in following conditions:

  • Weight loss
  • Atherosclerosis
  • High cholesterol
  • High triglycerides
  • Hives immune function and infection

It is also considered that green tea helps to decrease the risk of certain cancers. Green tea contains caffeine minerals, vitamins, oils, and polyphenols (particularly the epigallocatechin gallate (EGCG)). Possibly, epigallocatechin gallate (EGCG) is active ingredient of green tea. Green tea extract is also rich in bioflavonoid. EGCG (an antioxidant) of green tea is 200 times more potent than vitamin E to fight against free radicals and pro-oxidants.

Health benefits of Green Tea Extract:

Weight Loss:

According to recent study, green tea may help in weight loss. A study in Netherlands has shown that green tea abridged body weight, waist, respiratory quotient and body fat. Caffeine present in the green tea related with weight loss through thermogenesis and fat oxidation and with suppressed leptin in women according to the researchers explanation. The green tea-caffeine mixture enhanced weight continuance in regular low caffeine consumers.

Healthy Cholesterol Profile:

Most studies have recommended that green tea can improve the cholesterol profile by lowering the level of cholesterol. It was also demonstrated by the study that green tea protects against damage to LDL (bad) cholesterol which is caused by oxygen.


In the age-associated cognitive refuse and neuronal loss in neurodegenerative diseases for example Alzheimer’s, Parkinson’s and Huntington’s diseases, generation of reactive oxygen species like superoxide, hydroxyl radical and nitric oxide and inflammation play an important roles. Neuronal toxicity and the related diseases are caused due to the accumulation of iron and reactive oxygen species. Tea flavonoids (catechins) have been accounted to possess radical-scavenging, potent iron-chelating and anti-inflammatory activities. It may help to defend neuronal death and against the neurodegenerative diseases. EGCG may help to stop Alzheimer’s disease.


Green tea may help to reduce the risk of certain cancers like blood cancers, bone marrow, and lymph system cancers. People who drank five or more cups of green tea a day discovered a decreased risk of developing gastric cancer. Some animal studies have also suggest that green tea has a
protective effect against lung cancer, breast cancer and prostate cancer, associated to its active flavonoids – catechins, Epigallocatechin 3-o-gallate.


Green tea may help people who are stressed. Respondents who take more than five cups
of green tea daily are less prone to experience psychological distress than those who drank less
than one cup daily.

Other health benefits of Green Tea Extract:

  • It is rich in bioflavonoid, and protects against digestive and respiratory infections.
  • Green tea leaf extract contains EGCG, a powerful antioxidant 200 times more potent than vitamin E.
  • It has thermogenic effects that aids in weight loss without causing jitters or other unwanted side effects.
  • Green tea leaf is anti bacterial, helps lower cholesterol, reduces inflammation, and lowers blood pressure.
  • It also helps to prevent some forms of cancer including colon, pancreatic, and stomach cancer.
  • Green tea extract also protects against liver damage.
  • Some new research suggests green tea may help prevent liver transplant failure in patients.
  • Green tea extract helps decrease hormone activity and is an effective treatment for acne.
  • Green tea extract stimulates the immune system, and also helps defend against dental plaque.

Possible side effects of green tea:

With popular health benefits, green tea also has some side effects which mostly come from the caffeine. One 6 oz. cup of green tea has approximately 30 mg of caffeine. So, moderate utilization of green tea is implausible to cause problems for the majority of people.

Symptoms of caffeine in people who are sensitive to it:

  • Heart palpitations
  • Restlessness
  • Irritability
  • Loss of appetite
  • Sleeping problems
  • Upset stomach
  • Tremor
  • Skin rash
  • Frequent urination
  • Nausea

Sleeplessness, irregular heart beat, diarrhea, vomiting, dizziness, headaches, and loss of appetite can occur when daily drinking of 6 cups of green tea.

People who have heart problems, anxiety, panic attacks, kidney disease and sensitive stomachs should be cautioned about drinking green tea. Pregnant women should also consult physician while drinking green tea. People who take MAO (monoamine oxidase) inhibitors medication should avoid taking of green tea.

10 Health Benefits of Green Tea:

Green Tea Side Effects:

  • Poppy Scott

    the antioxidants in green tea really helps prevent cancer and some other forms of tumors.~;;

  • Delini

    really this green tea is very helpful..before m suffering frm fibroid cystic but this green tea is very helpful to relive pain 2 cups in a day keeps u energetic…..