TAGAWA:Today I’d like to ask Mr. Katô some questions on “ion and health”. Recently the word “negative ion” can be heard everywhere. But to our surprise, many people do not know the meaning and effect of the “ion”. The cyclopedia shows only “ion = an electriferous atom (or atomic group)”. First of all, please tell us what “ion” is.
Mr. Kato:When an atom or atomic group is electrified, it can be with either positive charge or negative charge, and positive or negative ions are generated through ionization. These negative ions are of significance to our human bodies. Negative ions are alkalescent, while positive ions are acidic. That is, although ions exist extensively in our lives, effective usage methods are needed.


TAGAWA:Would you please tell us why ions are related to the health?
Mr. Kato:Human body is composed of numerous cells, say 60 trillion. Among these cells, nerves and vessels are distributed like reticulation. Blood transfers nutrition for the cells. These vessels spread all over the body, with a total length of 9600 km, which is 2.5 times the circumference of the Earth. However, to provide all the 60 trillion cells along such long vessels with nutriment one by one, the action and labor are unimaginable. If the blood acts slowly, the transfer of nutrition to the cells will also become slow, and the human body will not be able to sustain.
 There are many negative ions inside the human body. But these combine the oxygen ions with the Hb of the erythrocyte to make the erythrocyte electrified with negative ions. Many doctors save dying patients by transfusing blood to them. But this effect is not caused by the blood replenishment but by the ions of the erythrocytes. Preserved blood seldom has such effect. Now people know the harm of the serum hepatitis and reduce the application of preserved blood. So fresh blood is better.


TAGAWA:I see. So please tell us the functions of the ions in our bodies in detail.
Mr. Kato:The health of a person depends on the acid-base equilibrium in the body. But in human bodies, acidic substances are generated frequently due to physiological action. These are generated when food is decomposed in the bodies. To neutralize it out and keep balance, basic substances are needed. As everybody knows, basic constitution is a fine system.
 Electrified and active ions keep constant in the blood and extracellular fluid and maintain the acid-base equilibrium. They promote the blood flow, circulate among the apparatuses, neutralize the aged and acidic or poisonous substances, and help detoxification and toxin discharge.

TAGAWA:Well, how much quantity of negative ions we need in our living is best appropriate?
Mr. Kato:I think everybody has felt not well in the office or the home sometime. Academia has proved that it is caused by the air lack of ions. It can also result in low work efficiency, and even momentous virulent effect to the respiratory organs.
 People often recuperate in hot spring. There are about 1,000~3,000 ions/cc in the air at a hot spring, while an ion therapeutic device can reach 20,000~300,000 ions/cc in 30 minutes. What is to be noticed is that long-time action to the human body by large quantity of negative ionized indoor air (eg. given off in a bedroom for a whole night) may cause fatigue and unease due to absorption of excess ions.
 Therefore, the quantity of ions in a room normally should be below 1,000 ions/cc preferably.

※The above interview along with some contents of Mr. Keiji Kato have been reduced in written form.
Interview postscript
Although I had make intensive preparation for the interview, but during the actual interview, the topic gradually went to the scientific direction that is more difficult. Mr. Katô has been the principal for the investigation of national public nuisances, and has even worked in the air ion project policy centers of many countries. Mr. Katô has abundant knowledge, many literature and research results, from which it can be seen that “air ion research” is the real vocation of Mr. Katô. Although I had read some literature of Mr. Katô before the interview, my knowledge appeared very insufficient. I’d like to express my acknowledgement to Mr. Katô for his explanation with simple and understandable illustrations. He is in his old age, but it is said he still present himself in academic meetings and write articles on air ions. As the clients of BIO ION also hope very much to listen to the speech of Mr. Katô. Please be sure to fulfill their desire. Thank you very much, Mr. Katô.
(Interviewer: Tagawa HITOMI, on May 5th, 2003)



Resume of Mr.Keiji Kato




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