More than a hundred types of Indian tea have been identified worldwide and have been drunk for thousands of years to improve health and peace of mind. Many properties of tea have been discovered, and it seems that the correct and principled consumption of tea does not have any particular side effects for the body. India is the center of tea cultivation and production in the world. In India, tea is also called by the same name. Compared to tea leaves in Iran, in the hot weather of India, tea leaves are larger and wider. Tea specific to India and its suburbs has unique antioxidants that fight free radicals in the body. The oxidation process in black tea is more than in other tea types, which adds to the antioxidant properties of tea.