奇速英语

最新研究：喝红茶或能降低心脏病死亡风险

The world is full of tea drinkers. Tea is known to be good for our health. Previous studies in China and Japan, where green tea is popular, have suggested several health benefits. Now, scientists say black tea may show similar benefits.

Black tea is the most common kind of tea in Britain. Scientists from the United States National Cancer Institute carried out the study. They examined years of data gathered about the tea drinking behavior(行为) of almost 500,000 adults in Britain for as many as 14 years. The researchers adjusted for risks that individuals may have related to health, living conditions, diet and lifestyle choices, as well as age, race and gender. The study found that high tea intake — two or more cups a day — was related to a benefit: a 9 to 13 percent lower risk of death from any cause than non-tea drinkers.

The research was published in Annals of Internal Medicine. The scientists say the lowered risk of death held true for study subjects with heart disease. However, researchers said there was no clear finding in connection with deaths from cancer. Researchers were not sure why. But, it is possible there were too few confirmed cancer deaths to measure, said Maki Inoue-Choi, who led the study.

The study of British tea drinkers was based on observing people’s behaviors and health. __________ “Observational studies like this always raise the question: Is there something else about tea drinkers that makes them healthier?” said Marion Nestle, a professor of food studies at New York University. The study does not offer enough evidence to advise people to change their tea behaviors, said Inoue-Choi. “If you drink one cup a day already, I think that is good,” she said. “And please enjoy your cup of tea.”