There May Be a Link Between Coffee and Lung Cancer, Study Suggests

Live Science | 4/3/2019 | Staff
k.collazik.collazi (Posted by) Level 3
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ATLANTA — Drinking coffee has been linked to a slew of health benefits, such as a longer life span, and a decreased risk of conditions including depression, heart attacks and certain cancers.

But a new study suggests that there may be a downside to your morning brew: Researchers found that drinking two or more cups of coffee or tea may increase a person's risk of lung cancer.

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Of note, the link was even true for nonsmokers. Because people who smoke cigarettes are also more likely to drink coffee and tea, it was difficult in previous studies to disentangle the effects of these drinks from those of smoking, in developing lung cancer, said lead study author Jingjing Zhu, a Ph.D. student at Vanderbilt University in Tennessee.

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In the new study, an international group of researchers analyzed data from 17 different studies that included a total of 1.2 million participants in the U.S. and Asia. The studies noted whether participants drank coffee or tea or smoked cigarettes. About half were nonsmokers.

The participants were tracked for an average of 8.6 years. During that time, more than 20,500 participants developed lung cancer.

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The researchers found that nonsmokers who drank two or more cups of coffee a day had a 41 percent higher risk of lung cancer than those who didn't drink coffee. Similarly, nonsmokers who drank two or more cups of tea a day had a 37 percent greater risk of lung cancer than non-tea drinkers. (Because data was taken from multiple studies, the exact definition of a cup varied.)

The study also found that a person's risk didn't change significantly between ages, races or the type of coffee people drank — both decaf and caffeinated coffee seemed to be associated with similar risks. In fact,...
(Excerpt) Read more at: Live Science
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