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Cigarette smoke contains more than 4000 individual constituents and damages most of the organs in the body. Our understanding of the mechanistic relationships between exposure to these individual constituents and the diseases produced by inhalation of whole smoke is incomplete, and efforts to estimate individual disease risks from known constituent levels and toxicity under-predict the level of risk that occurs with smoking . Furthermore, reduction of any one chemical or class of chemicals will not necessarily lead to a reduction in disease risk, and the magnitude of chemical reduction needed to produce a substantive change in disease risk remains uncertain.
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Cigarette smoke contains more than 4000 individual constituents and damages most of the organs in the body.
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Our understanding of the mechanistic relationships between exposure to these individual constituents and the diseases produced by inhalation of whole smoke is incomplete, and efforts to estimate individual disease risks from known constituent levels and toxicity under-predict the level of risk that occurs with smoking .
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Cigarette smoke contains more than 4000 individual constituents and damages most of the organs in the body.
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µÚ¶þ¾äûÓÐÓï·¨ÎÊÌ⣬ Our understanding of the mechanistic relationships between exposure to these individual constituents and the diseases produced by inhalation of whole smoke is incomplete, and efforts to estimate individual disease risks from known constituent levels and toxicity under-predict the level of risk that occurs with smoking . Ö÷¸ÉΪOur understanding ... is in complete , and efforts ... under-predict the level...

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Cigarette smoke contains more than 4000 individual constituents and damages most of the organs in the body. ÏãÑÌÑÌÎíÖк¬4000¶àÖֳɷ֣¬¿É¶ÔÈËÌåµÄ´ó²¿·ÖÆ÷¹ÙÔì³ÉË𺦡£Our understanding of the mechanistic relationships between exposure to these individual constituents and the diseases produced by inhalation of whole smoke is incomplete, ÎÒÃÇ»¹²»ÊǺÍÃ÷°×ÕâЩµ¥¸ö³É·ÖµÄÉãÈë/ÎüÈëÓëÎüÈëÕû¸öÑÌÎíµ¼Ö¶øµÄ¼²²¡Ö®¼äµÄ»úÖÆ/»úÀí¹ØÏµ and efforts to estimate individual disease risks from known constituent levels and toxicity under-predict the level of risk that occurs with smoking ÄÇôµ±ÊÔ×ÅÓÃÎÒÃÇÒÑÖª³É·ÖµÄŨ¶ÈºÍ¶¾ÐÔÈ¥ÆÀ¼Û£¨ÓÉÎüÈëÕû¸öÑÌÎí¶øÒýÆðµÄ£©Ä³ÖÖ¼²²¡µÄ·çÏÕʱ£¬»áµÍ¹ÀÓÉÎüÈëÕû¸öÑÌÎí¶øÓÕµ¼ÕâÖÖ¼²²¡µÄʵ¼Ê·çÏÕ¡£. Furthermore, reduction of any one chemical or class of chemicals will not necessarily lead to a reduction in disease risk, and the magnitude of chemical reduction needed to produce a substantive change in disease risk remains uncertain. ¶øÇÒ£¬²¢²»ÊǽµµÍ£¨Õû¸öÏãÑÌÑÌÎíÖУ©ÈκÎÒ»ÖÖ»òÕßÈκÎÒ»ÀàµÄ»¯ºÏÎï¶¼»á½µµÍÆä£¨¼´£ºÎüÈëÕû¸öÑÌÎí£©ÓÕµ¼¼²²¡µÄ·çÏÕ£¬²¢ÇÒÐèÒª´ïµ½ÄÜ´ó·ù¶ÈµØ½µµÍij¼²²¡·çÏÕµÄÄ¿µÄ£¬ËùÐèÒª½µµÍµÄijÖÖ»¯ºÏÎïÐèµÄÁ¿Ò²»¹²»È·¶¨¡£

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