is smoking 4 cigarettes a day harmful No Safe Level of What happens to your lungs
What happens to your lungs from smoking? UT MD Anderson smoking 4 cigarettes a day One or two cigarettes a day viewed as less harmful but Immediate red card. There isn't a "safe" amount of smoking. Even occasional smoking or social smoking can damage your lungs, and quitting lowers your risk of cancer. Visit the link How do cigarettes affect the body? Krishna Sudhir
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