| Smoking causes the lungs and trachea to be coated in Tar and other chemicals. These reduces the amount of oxygen carried by the blood and mutations of cells in the respiratory system. These mutations can be malignant tumors in the respiratory system.
A lot of people are very selective when it comes to medical documents, perhaps we're all guilty of doing this at one time or another. They might take they one study out of a thousand that supports their point and dismiss all the others.
Knowledge is power, and with it comes responsibility, use it well. |