According to Johns Hopkins Medicine, the leading cause of cancer and death from cancer is smoking. And 85 percent of lung cancer cases are smoking-related.
But what if you quit smoking long ago?
Barnes, Luke. “Research Reveals the Risk of Lung Cancer for Ex-smokers.” Mirror. N.p., 2016. Web. 23 Nov. 2016.
Boyles, Salynn. “Quit Smoking: Death Risk Drops Fast.” WebMD. WebMD, n.d. Web. 23 Nov. 2016.
“Cigarettes: The Lung Cancer Risks – Harvard Health.” Harvard Health. N.p., n.d. Web. 23 Nov. 2016.
“Former Smokers: What’s Your Risk for Lung Cancer?” John Hopkins Medicine. N.p., n.d. Web. 23 Nov. 2016.