Green tea has been used for medicinal purposes in China and Japan for thousands of years. It is
claimed that green tea may: improve mental alertness; reduce unpleasant digestive symptoms and
headache; assist with weight loss; and be effective in helping to prevent heart disease and cancer. Lisa
is a 25-year-old whose family has a history of cancer. She wants to know if there is any evidence about
the general health benefits related to cancer prevention.
Clinical question
Is there any evidence to support the claim that drinking green tea, may prevent cancer in adults?