吸烟的行为研究发现 ,吸烟是一种有规律的行为 ,其内在的驱动力是身体需要更多的尼古丁 ,因为吸烟者体内代谢尼古丁的酶活性增强。如果身体代谢尼古丁的过程减缓 ,吸烟的人就会表现出不愿意吸烟了。体内代谢尼古丁的酶是由基因调节的 ,如果称为CYP2 A6的这一基因有缺陷 ,人就不 Smoking behavior study found that smoking is a regular behavior, the underlying driving force is the body need more nicotine, because smokers metabolized nicotine increased enzyme activity. If the body slows the process of nicotine metabolism, smokers will show unwillingness to smoke. The enzymes that metabolize nicotine in the body are genetically regulated, and if the gene called CYP2 A6 is defective, one does not