Because of the caffeine that black tea contains, it provides energy, it is an antioxidant and prevents aging of the body. It also prevents tooth decay if it is consumed sugar-free. Because of the energy inside it, tea is not recommended for cardiac, blood pressure and stomach patients.
Antioxidant effect of green tea is higher than black tea. It has also fat burning effect. The most important feature of the green tea is anticancer effect. According to researches performed in China, up to 50 percent decrease has been determined among the breast and pancreatic cancer patients who consume green tea. Experts do not recommend pregnant women to drink green tea.