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We wanted to find out if smoking plays the same role in all subtypes, or if some groups are more vulnerable than others, Emmy Keysendal, a PhD student at the Institute of Environmental Medicine, Karolinska Institutet, Sweden, and the first author of this study, told Medical News Today

These requirements include the following

However, its the high levels of harmful chemicals released when tobacco is burnednot nicotinethats the primary cause of smoking-related diseases

"But this develops more quickly in people who smoke." 4 / 26 There are more than 4,000 chemicals in tobacco smoke, and many of them trigger the destruction of collagen and elastin