That was greeted by a shrug from Hull, a free-wheeling 28-year-old from England
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Smoking is a leading cause of cancer because tobacco smoke many harmful substances, including over 50 carcinogens
The most important change is a lifestyle change
His concerns are that snus could make it harder for active smokers to give up their habit by fuelling nicotine addiction, or act as a gateway drug that entices non-smokers to start
In advanced cases, the loss of breathing capacity can become profound, and some patients ultimately require a lung transplant