The document defines tea and identifies its main types and benefits. It discusses how tea is the second most consumed beverage globally and exists in many cultures. The key types of tea covered are white, yellow, green, oolong, and black tea. Each has distinct processing methods and health benefits such as cancer prevention, weight loss, and stress relief. Herbal teas are also discussed as using infused herbs, flowers, fruits and spices. The top tea producing countries are also noted.