1966 cigarette warning label How Labels Helped Lead to a Crackdown on Smoking Anti-smoking images on cigarette packs
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Clinically, this pattern shows up as burnout, anxiety, and chronic irritability

However, making a definitive answer has been difficult, and the issue remains controversial

Oxford University Press on behalf of the Society for Research on Nicotine and Tobacco: 15121517

This results in a persistent cough, known as smokers cough. Over time, the airways can become scarred and narrowed, increasing the risk of infections

Huxley, R
