Pack years is a measure of how much you have smoked in your life. Despite what you might assume from the name, it is not the number of years you have smoked. That's just one part of the math used to ...
PAHs can also be found in cigarette smoke, car exhaust fumes, and other smoked foods. Both HCAs and PHAs are known to change the DNA, and that may increase the risk of cancer. There were studies that ...