Smoking Ups Chances of Second Cancer

By News Desk

People who smoke at least 20 cigarettes a day prior to their first cancer diagnosis have a five-fold risk of developing a second smoking-associated cancer, researchers have found.


US researchers, who focused on the development of second primary cancers, arrived at the conclusion after examining data from five major studies involving over 15,000 people with lung, head and neck, bladder and kidney cancer.

“As survival improves for a number of smoking-related cancers, patients are living longer, however, smoking may increase the risk of developing a second smoking-related cancer among these survivors. Our study demonstrates that healthcare providers should emphasise the importance of smoking cessation to all their patients, including cancer survivors,” they said, as quoted by

Almost 900 second primary smoking-associated cancers were diagnosed among the participants, the researchers observed.

According to the findings published in the Journal of Clinical Oncology, the smokers were 3.3 times more likely to develop a second smoking-associated cancer if they were already diagnosed with lung cancer.

With kidney and bladder cancer, they were 5.3 and 3.7 times more likely respectively.

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