An antioxidant is a substance found in some food and drinks which can help protect us from the harmful effects of free radicals. Well-known examples of antioxidants are vitamins A, C and E.
A free radical is an unstable substance which can disrupt and damage molecules in the body.
A flavonoid is a powerful antioxidant found in tea.
"Tea is a rich source of a special antioxidant called a flavonoid, considered to be some of the most potent antioxidants in nature. Scientists believe antioxidants in the diet have an important role to play in the fight against diseases including cancer. (source CSIRO media release April 30, 1998.)
Antioxidants work by reducing the effects of free radicals before damage to body cells occurs.
Vitamins A, C, and E, which are found mainly in fruit, are the best known antioxidants. Flavonoids are specific types of antioxidants found in tea, apples, onions and other foods, which are currently the focus of intense study due to their potential health benefits.
Brewing time will affect the level of antioxidants released from the tea leaves into the tea. The majority of antioxidants will be released during the first four minutes of brewing
To maximise the benefits antioxidants offer, eat a varied, low-fat diet with plenty of fruit, as well as a few cups of tea.
In a cup of tea (200 millilitres) there's about 35-50 milligrams of caffeine. Up to 600 milligrams a day is considered OK (equivalent of 15 cups of tea per day).Over 600 milligrams is considered excessive.
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