Lung cancer rates not declining as expected despite decrease in smoking

Apr 3 2024Umeå University Among women lung cancer has in fact increased. This is shown in a new study at Umeå University, Sweden. The study means that the view of how long smoking affects health may change.

According to previous research, the risk of developing lung cancer decreases sharply and quickly after quitting smoking. According to a British study, the number of people who had lung cancer before the age of 75 fell from 16 percent to three percent among those who quit smoking before the age of 50.

The results showed that the risk of being affected varied greatly depending on the type of lung cancer, age and gender. Based on previous studies, it would have been expected that the risk of cancer would have decreased among the elderly as well. However, lung cancer was as common in 1970 as in 2021 among men aged 75-79 years. The number of squamous cell cancer had fallen sharply, while in 2021 it had instead increased six-fold for the other common form of cancer, adenocarcinoma.

"These results should certainly not be interpreted as it is useless to quit smoking. On the contrary, the study emphasizes the importance of quitting early, preferably never starting, as it may be the case that the risk of lung cancer is elevated for longer than we previously thought," says Bengt Järvholm.

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