Drops of health – Being overweight

All tea comes from one plant Camellia Sinensis if it doesn't come from that plant it is not tea (herbs come from a variety of plants). Over time, the plant has protected itself from photosynthetic stressors by forming chemical compounds known as polyphenols. Polyphenols, which include flavonoids, have the same beneficial class of compounds, antioxidants, that make fruits and vegetables good for you.

The difference in green tea and oolong tea is processing. All tea is green when picked. Green tea is heated in order to halt the natural enzymatic reaction (oxidation) of the leaf. Once dried, green tea leaves are then rolled intentionally breaking the cell structure. Oolong tea leaves are plucked, kept under carefully controlled conditions and allowed to oxidize. These leaves are not intentionally broken, leaving most of the cell structure intact. These processing differences make each category of tea beneficially different even though they come from the same plant.