This smoke coming from a burning cigarette or exhalation of a smoker
People who breathe secondhand smoke are exposed to the same carcinogens that smokers, although in smaller quantities.
Environmental Causes: There are other causes of lung cancer in the environment, but their effects on disease rates are small compared with smoking.
Cancer-causing agents that can be found outside the home, especially in the workplace, including asbestos, radon, arsenic, chromium, nickel, tar and soot
These substances can cause cancer in people who never smoked and combined with the cigarette further increase the risk of developing cancer.
Many countries are working to control these substances.
Beta Carotene: Studies indicate that people who smoke a lot can reduce your risk of cancer to avoid consuming supplements with beta carotene.
Eating and physical activity: Studies show that a diet rich in fruits, and possibly vegetables may reduce the risk of getting this type of cancer, while heavy alcohol consumption may increase.
In addition, studies show that physically active people have a lower risk than sedentary, even taking into account the cigarette.
Symptoms One in four people with lung cancer have no symptoms when the tumor is diagnosed.
This cancer is usually found on a chest X-ray done for other reasons. The remaining three bedrooms have some symptoms caused by: direct effects of tumor metastasis effects in other parts of the body or malignant changes of hormones, blood, or other systems.
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