G.P. eats "lots of fat," leads a "stressful" life, and has smoked "about two packs a day for the last 40 years." Her chronic morning cough recently worsened, and she was diagnosed with a lung mass. The most likely contributing factor for development of lung cancer in G.P. is

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Quizplus · Accepted Answer

Smoking cigarettes is the most well-established risk factor for lung cancer, and the fact that G.P. has smoked two packs a day for the past 40 years is a strong contributing factor to her lung cancer. While a high-fat diet and stressful lifestyle may not be beneficial for overall health, they are not directly linked to the development of lung cancers. Urban pollutants may contribute to lung cancer risk in some cases, but this is not stated as a factor in G.P.'s case.

GP Eats "Lots of Fat," Leads a "Stressful" Life, and Has