Q7 If smoking persons perform a medical checkup carefully, can they avoid the risk of development of symptoms of cancer? A It seems that it is large that the risk of development of symptoms of the cancer by smoking is based on individual difference. As for a risk, a unhealthier person becomes high although it is a natural talk. We want to be always cautious of our health condition irrespective of the smoking person and the non-smoking person. If it is called a medical checkup, a periodic medical examination will be visualized. It will be safe if it is those who are examining every month. However, an effect is seldom expectable by medical checkup of a grade at once in one year. By one medical checkup, even if a serious pathological change occurs, it may overlook, or it may not react to inspection by degree of condition. Moreover, when the symptoms is shown immediately after examining, it will be in an uncontrolled state for about one year. Then, we have just received the medical checkup frequently. In fact, it may be unable to be said that it meets generally about a medical checkup of cancer. Probably, there is a person who had drunk barium by the stomach cancer medical checkup. Barium is drunk because radiation is applied to the stomach. A problem is in the medical checkup by this radiation. The risk of development of symptoms of the cancer by radiation is very high. "I was examined for cancer. I suffered from cancer owing to it." Such black humor has actually happened. The risk of development of symptoms of the cancer by radiation is said are far higher than the rate of discovery of the cancer by medical checkup by the age in the 20th generation and the first half of the 30th generation. Even so, the latest doctor wants to take a picture of Roentgen rays frequently. It will be said that the affected part will be grasped easily. But, since there is no connection beside doctors, followings also happen actually. Since I became headache, when going to the hospital, my head was applied to CAT. Especially abnormalities were not discovered, but when I said by oral consultation, "I have tinnitus", go to otolaryngology was said. Since the hospital did not have otolaryngology, I performed to neighboring otolaryngology. "A picture of your Roentgen rays was taken first" was said, and I had a picture of Roentgen rays taken. However, abnormalities were not discovered by the ear. While the doctor was investigating my mouth, he discovered that the molar of the upper jaw was swollen. "This is not my territory. You should go to the dentist." The patient of a picture of Roentgen rays having been taken also at the dentist said like this is trustworthy. A certain people have knowledge about the damage of radiation. If they are contaminated like this, they will understand that it is danger. They will explain to a doctor so. But, there are also many people according to directions of a doctor. For some unknown reason, the present examination for cancer has a method in use depending on this dangerous radiation. There is also a method by the endoscope etc. It will still be good, if they are a juggler and a yogi. But probably, you do not want to have experience which thrusts in an endoscope in the stomach or the anus every month. Moreover, if a poor doctor deals with an endoscope medical checkup, only, a subject has internal organs inspection is not only painful, but damaged, and may die by the case. It is not necessary to say that the method of receiving a medical checkup in a medical institution is the best. But, we should check the grade which are also ourselves.