What are benefits of tea over coffee?

What are the benefits and disadvaantages of drinking tea and coffee? does it have any serious side effect?

• Answer:

  Caffeine keeps you awake. For some the caffeine can cause heart problems. "Researchers at the University of Murcia in Spain (UMU) and the John Innes Center (JIC) in Norwich, England have shown that a compound called EGCG in green tea prevents cancer cells from growing by binding to a specific enzyme. "We have shown for the first time that EGCG, which is present in green tea at relatively high concentrations, inhibits the enzyme dihydrofolate reductase (DHFR), which is a recognized, established target for anti-cancer drugs, " Professor Roger Thorneley, of JIC, told Reuters." "Disease beater: In recent years, scientists have been lauding the cancer-fighting abilities of the powerful antioxidant polyphenols found in black and green teas. "These teas contain properties that not only protect the cells from carcinogens, they also shrink tumors," explains Paul Lechance, Ph.D., executive director of the Neutraceutical Institute at Rutgers University. "While we can't say you'll never get cancer if you drink tea, you are certainly doing yourself some good by drinking it." What's more: A study from the University of North Carolina concluded that people who drink three cups of tea a day reduce their risk of heart attack by 11%." "Coffee -- "A number of important studies have shown that coffee may make you more alert and even boost your learning abilities and powers of reasoning. This is good news for people who might be taking a crucial exam or preparing for an important interview. In addition, "