If you are single, you can draw social security and work without paying taxes if your income is $25,000 or less. For a couple that is married and filing a joint return, the untaxed base is $34,000 per year. If you are single, you can draw social security and work without paying taxes if your income is $25,000 or less. For a couple that is married and filing a joint return, the untaxed base is $34,000 per year.
Bronchioles and alveoli. Smoking causes the majority of lung cancers â both in smokers and in people exposed to secondhand smoke. But lung cancer also occurs in people who never smoked and in those who never had prolonged exposure to secondhand smoke.In these cases, there may be no clear cause of lung cancer.he two general types of lung cancer include: 1  Small cell lung cancer. 2  Small cell lung cancer occurs almost exclusively in heavy smokers and is less common than non-small cell lung cancer. 3  Non-small cell lung cancer.
The most common symptom of lung cancer is a cough caused by a blockage of the air passage to the lung as the tumor grows. Smoking is a major cause of lung cancer, as well as other cancers and diseases, such as emphysema and chronic bronchitis.Smoking is considered the single largest unnecessary and.MOKING: THE NUMBER ONE CAUSE OF LUNG CANCER. Lung cancer is a disease in which a primary cancer (the original site where the cancer occurred) develops in the tissue of the lungs.