Q54 It proves that dioxin is a deadly poison. But, is it related to it and smoking? A The toxicity of dioxin does not make a problem the Benzpyrene contained in a cigarette at all. It is so powerful. But, in the case of a cigarette, tobacco is most with a filter. It is thought that a filter is required in order to remove a detrimental ingredient. But, generating of dioxin cannot be prevented if the quality of the material of a filter is a plastic at all. Tar was removed and dioxin was inhaled. Now, it is not clear anymore the filter for what it is. However, there is no report by which dioxin was now detected from the filter. But in a smoking person's inside, When a pipe addict, a cigar addict, and a cigarette addict are compared, It is reported that the risk of a carcinogenesis has an overwhelming cigarette addict. As a reason, the cigarette addict is explaining because the ratio attracted to lungs is higher than other addicts. It seems that but, it is scarce as a basis. It is more appropriate to think that a problem is in the quality of the material of a cigarette. A possibility that dioxin has already adhered to the leaf of a cigarette itself cannot be denied, either. It is because dioxin was openly used as an agricultural-chemicals ingredient until very recently. Moreover, the risk which dioxin generates by the chemical change is unavoidable with the agricultural chemicals used now. Leaves of tobacco are articles of trade. Therefore, the farmhouse has the frequency higher than other crops which uses agricultural chemicals. It is because it does not become goods if a leaf is consumed by the insect. Therefore, we have to worry also about residual agricultural chemicals other than dioxin. A possibility that dioxin will occur from the filter exposed to hot smoke cannot be denied. Furthermore, the risk which a detrimental ingredient generates from the paper which has burned directly is also unavoidable. Since the big business sells also to anyhow as goods, we want to think that the safe standard is probably cleared. But, dioxin is the substance stabilized extremely. Decomposition is not expectable once it is taken in by the living body. The discharge is also difficult. It seems that what is necessary is to just be metabolized like nicotine. But, most detrimental ingredients have very high remains nature. Temporarily, the detrimental ingredient in one cigarette presupposes that it is 1/100 of a safe standard. Those who smoke 20 per day make a 6 times as many detrimental ingredient as a safe standard still remain inside of the body in January.