Iced green tea is the perfect drink to have on a hot summer night. This drink is refreshing and incredibly tasty, but what is the best iced green tea's health benefits it holds. Add lemon to your iced green tea and you can make it even more tasty and healthy. If you have diabetes, you may want to sweeten your tea with a natural sweetener like stevia. Learn more about the advantages of iced green tea and enjoy them for better health. Vitamin C Benefits Iced green tea contains a large amount of vitamin C as both green tea and lemons are rich in this vitamin. Vitamin C has a significant impact on strengthening the immune system. A study by scientists at the Uniformed Services University of Health Sciences has shown green tea has the ability to prevent tumor formation in mammary cells. Vitamin C can also lower your cholesterol, and it can be used to treat diabetes and elevated blood pressure states Linda Page, author of Healthy Healing Linda Page, All the eleventh edition.