Lung cancer, or lung carcinoma, is the uncontrolled growth of cells that starts of in one or both lungs, usually in the cells that line the air passages. These cells that are rapidly dividing do not develop into a healthy lung tissue, but form a tumor. As the tumors become larger and more numerous, they undermine the lung’s ability to provide the bloodstream, and therefore body, with oxygen.1
Impact of coffee on lung cancer
A 2010 meta-analysis, including 5 prospective, and 8 case/control studies showed a positive association between lung cancer and consuming 5-7 cups of coffee per day. Those who consumed 5-7 cups a day had a 27% increased risk of lung cancer. This coffee consumption was associated with increased risk of lung cancer in prospective studies, and studies conducted in America and Japan, but associated with a slight decreased risk of lung cancer in non-smokers.2
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