2Causes and risk factors
Smoking is the fundamental cause of lung cancer, whether in cigarettes, pipes or cigars. Between 80% and 90% of lung cancer occurs in smokers or former smokers, although there is also a risk in passive smokers. The abandonment of smoking is very important in these patients since it directly affects survival as well as the effectiveness and tolerance of the treatments.
There are factors that increase the risk of developing this type of tumor, such as advanced age and male sex. This last parameter probably related to the highest consumption of tobacco in this group. However, in the last few years, the incidence of lung cancer in women has increased, this can be attributed to the increase in smoking among women. There are other causes that can influence the development of lung cancer:
- Exposure to certain substances such as asbestos or radon.
- Environmental pollution in urban areas.
- Family history of lung cance