What is the substance that causes cancer?
It is difficult to ascertain the nature of this article. He removed so far approximately twenty of these substances that can cause cancer, but that the substance or substances that cause lung cancer in humans has not been isolated so far categorically. • The second fact Smoking is the most important reasons that lead to chronic lung diseases and cancer. It is clear scientifically that smoking causes changes in the bronchus and lung develop gradually even cause chronic bronchitis. This starts the disease Ksaal simple in the morning does not pay any smoker or even a doctor’s attention (cough cigarette) and then evolve to the coughs and shortness of breath and flu-recurrent wheezing in advanced cases is difficult for the patient do any physical effort. Studies have shown that adolescents on chronic lung diseases may arise after the smoking 5-10 cigarettes a day for a year or two. The presence of the filter is not guaranteed as the effective filter that removes all nicotine, ash, oils and
