A leading cause of death of people around the world, lung cancer is caused by multiple factors. It is the second most common cancer in the world after breast cancer. More than 8-10 cases of lung cancer are in people aged 60 or older, and the occurrence of lung cancer in Scotland is one of the highest. The lowest lung cancer rates are in Middle African countries.
Lung cancer has one of the lowest survival rates, as two-thirds of patients are diagnosed in too late of a stage when curative treatment is not possible. Around 30% of diagnosed people survive at least one year after diagnosis, and more than three/quarters of people who die from this cancer are 65 or over. Around 2 million people died worldwide in 2013.
The link between tobacco and cancer was established over 50 years ago, and smoking causes more than 4 in 5 lung cancers in the UK. Smoking, secondhand smoking, occupational exposures (such as asbestos), exposure to radon when you are a smoker increases your chances, and diesel exhaust. Poor diet is also a contributing factor.
Source: http://www.therichest.com
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