Drinking green tea may offer some protection against lung cancer, say experts who studied the disease at a medical university in Taiwan. The latest work in more than 500 people adds to growing evidence suggesting the beverage has anti-cancer powers. In the study, smokers and non-smokers who drank at least a cup a day cut their lung cancer risk significantly, a US cancer research conference heard. The protection was greatest for people carrying certain genes. But cancer experts said the findings did not change the fact that smoking is bad for health. Daily cuppa Green tea is made from the dried leaves of the Asian plant Camellia sinesis and is drunk widely across Asia. The rates of many cancers are much lower in Asia than other parts of the world, which has led some to link the two. Laboratory studies have shown that extracts from green tea, called polyphenols, can stop cancer cells from growing. But results from human studies have been mixed. Some have shown a protective effect while others have failed to find any evidence of protection. In July 2009, the Oxford-based research group Cochrane published a review […]