Since Green Tea is used traditionally in China and India as medicine, many studies are conducted on the leaves to derive their actual effects on health. People consume tea leaves by taking them in capsules or tablets, or by adding powdered green tea called matcha, to various foods and beverages. They are known to be rich sources of antioxidants. They promote heart health, provide energy and even help in weight loss. However, you must check with your doctor whether you should consume them or not.