Oolong and black teas get their dark color and flavor from additional processing. The researchers think that processing may play a part in tea s cancer-fighting potential. The key is a class of chemicals called polyphenols. Our theory was that white tea might have equivalent or higher levels of these polyphenols than green tea, and thus be more beneficial. Chemical analysis confirmed their theory.
White tea contains the same types of polyphenols as green tea, but in different proportions.
Those present in greater amounts may be responsible for white tea s enhanced cancer-fighting potential, says Dashwood. Lab tests on four varieties of white tea showed that it may prevent prevent DNA mutations, the earliest steps leading to cancer. The researchers say that their latest data indicate that white tea may protect against colon cancer in particular. The researchers say more studies are needed to determine whether white tea actually protects people against cancer. White tea, and tea in general, is a healthy alternative to other popular drinks, such as sodas, says Dashwood.