General Discussion
In reply to the discussion: Rush Limbaugh denied smoking risks in 2015: 'Smokers aren't killing anybody' [View all]irisblue
(38,101 posts)source--https://www.cancer.org/latest-news/why-lung-cancer-strikes-nonsmokers.html
date--October 31, 2019
snip--"As many as 20% of people who die from lung cancer in the United States every year have never smoked or used any other form of tobacco. In fact, if lung cancer in non-smokers had its own separate category, it would rank among the top 10 fatal cancers in the United States."
snip--" Radon gas. The leading cause of lung cancer in non-smokers is exposure to radon gas, according to the US Environmental Protection Agency (EPA). It accounts for about 21,000 deaths from lung cancer each year. About 2,900 of these deaths happen among people who never smoked. Radon occurs naturally outdoors in harmless amounts, but sometimes becomes concentrated in homes built on soil with natural uranium deposits. Studies have found that the risk of lung cancer is higher in people who have lived for many years in a radon-contaminated house. Because radon gas cant be seen or smelled, the only way to know whether its a problem in your home is to test for it. A Citizens Guide to Radon explains how to test your home for radon easily and inexpensively, as well as what to do if your levels are too high.
Secondhand smoke. Each year, about 7,000 adults die of lung cancer as a result of breathing secondhand smoke. Laws that ban smoking in public places have helped to reduce this danger. The American Cancer Society Cancer Action NetworkSM (ACS CAN) - the nonprofit, nonpartisan advocacy affiliate of the American Cancer Society - is working to expand and strengthen these laws to further protect both people who smoke and those who don't from the dangers of secondhand smoke."
snip--" Air pollution. Researchers have known for a long time that both indoor and outdoor air pollution can contribute to lung cancer. The World Health Organization (WHO) classifies outdoor air pollution as a carcinogen. However, it's believed the risk of lung cancer associated with air pollution is lower in the US than in many other countries because of policies that have helped to lower the levels of exposure."
lots more at article
Mr L, this is a pretty fair source