A Non-Small Cell Lung Cancer Starts In Flat Cells That Line The Airways, And It Grows Rapidly The harmful substances present in tobacco smoke, such as carcinogens and toxic chemicals, can cause DNA damage and genetic mutations, leading to the development of lung cancer. By quitting smoking, individuals allow their bodies to gradually repair and restore the damaged lung tissue, reducing the risk of cancer initiation and progression. Over time, the lung's natural defense mechanisms regain...
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