Tea is a term that encompasses both true teas and herbal teas. There are four teas that fall under the true tea category: green tea, black tea, oolong tea and white tea. All four of these teas are derived from the Camellia sinensis plant. What makes each true tea unique in both flavor and health benefits is whether the leaves are heated or oxidized during processing.

Herbal teas are not true teas, and instead, are drinks made by steeping herbs, flowers, roots or other ingredients in water. However, certain herbal teas contain unique compounds that may offer health benefits. This varies based on which ingredients are included in the tea blend.