BSIP, CHASSENET / SCIENCE PHOTO LIBRARY BSIP, CHASSENET / SCIENCE PHOTO LIBRARY
Smoking. Hand stubbing out a lit cigarette into a pile of extinct butts, if front of a lung X-ray. Prolonged use of cigarettes and other tobacco products is associated with several lung disorders, including cancer, chronic bronchitis and emphysema. Smoking also causes diseases of the coronary and vascular systems.
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