Here's a list of some of its amazing benefits — benefits that you may not have been aware of. Some of these benefits are still being debated, so please do your own research if you want to use green tea for medicinal purposes.
Weight Loss.Green tea increases the metabolism. The polyphenol found in green tea works to intensify levels of fat oxidation and the rate at which your body turns food into calories.
促進新陳代謝，降低體重

Diabetes.Green tea apparently helps regulate glucose levels slowing the rise of blood sugar after eating. This can prevent high insulin spikes and resulting fat storage.
調節血糖水平，防止糖尿病

Heart Disease.Scientists think, green tea works on the lining of blood vessels, helping keep them stay relaxed and better able to withstand changes in blood pressure. It may also protect against the formation of clots, which are the primary cause of heart attacks.
預防心臟病

Esophageal Cancer.It can reduce the risk of esophageal cancer, but it is also widely thought to kill cancer cells in general without damaging the healthy tissue around them.
降低患食道癌的風險

Cholesterol.Green tea reduces bad cholesterol in the blood and improves the ratio of good cholesterol to bad cholesterol.
調節高密度膽固醇與低密謀膽固醇的比例，降低壞膽固醇

Alzheimer's and Parkinson's.It is said to delay the deterioration caused by Alzheimer's and Parkinson's. Studies carried out on mice showed that green tea protected brain cells from dying and restored damaged brain cells.
可對抗老年癡呆和帕金森病

Tooth Decay.Studies suggests that the chemical antioxidant "catechin" in tea can destroy bacteria and viruses that cause throat infections, dental caries and other dental conditions.
含有抗氧化成分，能保護牙齒

Blood Pressure.Regular consumption of green tea is thought to reduce the risk of high blood pressure.
降低血壓

Depression.Theanine is an amino acid naturally found in tea leaves. It is this substance that is thought to provide a relaxing and tranquilizing effect and be a great benefit to tea drinkers.
緩解低落情緒

Anti-viral and Anti-bacterial.Tea catechins are strong antibacterial and antiviral agents which make them effective for treating everything from influenza to cancer. In some studies green tea has been shown to inhibit the spread of many diseases.
具有抗菌性和抗病毒性，可對抗流感等多種疾病

Skincare.Green tea can apparently also help with wrinkles and the signs of aging, This is because of their antioxidant and anti-inflammatory activities. Both animal and human studies have demonstrated that green tea applied topically can reduce sun damage.
美容護膚