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.
Smoking and lung cancer. By far the biggest cause of lung cancer is smoking. Although some people who have never smoked get lung cancer, smoking causes more than 8 out of 10 cases (86%). The more cigarettes you smoke, the more likely you are to get lung cancer.But the length of time you have been a smoker is also important.y far the biggest cause of lung cancer is smoking. Although some people who have never smoked get lung cancer, smoking causes more than 8 out of 10 cases (86%). The more cigarettes you smoke, the more likely you are to get lung cancer. But the length of time you have been a smoker is also important.