Green tea has more health benefits compared to other Chinese teas like oolong and black tea, all of which come from the plant Camellia sinensis. What makes green tea different is the process by which it is made. Green tea owes much of its health benefits to how the Camellia sinensis leaves are steamed. The steam process keeps the EGCG health benefit of green tea from oxidizing. With oolong and black teas, however, the leaves are fermented instead of being steamed, thus causing the EGCG health benefit to transform into another less medicinally potent form.
