Anion is an atomic element of negatively charged air particle. We feel fresh in the forest or hot spring that is abundant in anion. An atom becomes anion when losing electron, whereas it becomes a positive ion when acquiring electron.
Anion promotes cellular metabolism, increases vitality and appetite, purifies blood and
soothes one's nerve, and is called "vitamin in the air". There are 800 to 2000 anions per
1cc of air in forest, hot spring, waterfall and seashore.

When we enter a place that is abundant in anion, we feel fresh as if:
 We walk outdoors after a storm passed off,
 We stand in front of a waterfall, or
 We are in the pine tree wood.
 
 
 
It is known that the proportion of anions to positive ions is approximately 1 to 1.2 in the pure stable air. The study conducted by Dr.Krueger at Berkeley University in California, USA, Dr. Sulman at Hebrew University in Jerusalem and Dr. Moor at Mingum University shows the followings:
When anions exist abundant in air exceeding 1000ea per 1cc of air, alpha wave activates
in one's brain to release anxiety and tension that are the main cause of asthma and
migraine. It controls secretion of serotonin and free histamin to promote mental activity
and release tension. The amount of anions existing in the air has significant influence
on one's health and healing effect.

1. Purification of blood
    Anion increases the ratio of mineral ingredient in blood including calcium, sodium and
    potassium, and purifies blood through alkalinization.

2. Activation of cells
    When the number of anions increases in blood, electric exchange of substances promotes
    in the cellular membrane. This alkalinizes and purifies blood.
3. Promotion of immunity
    When the number of anions increases in blood, the amount of gamma globulin also
    increases in blood. This enhance immunity against infection. That's why anion therapy
    has a very effective healing effect.

4. Control of autonomic nerve system
    Anion controls autonomic nerve system in a beneficial manner for our body in reaction
    to the conditions of our blood system and internal organ, and helps us think and feel in
    a positive manner. Anion vivifies the entire body systems including nerve system, blood,
    cells and lymph to decisively recover weakened function and offers vitality.

* Harmful effect of positive ion
   If environment is seriously polluted, the normal proportion of anions to positive ions is
   destructed. Positive ions overwhelms anions. The ionized air particulates rapidly collide
   against each other under the law of Brown motion to create large particles that have no
   biological activity. The number of anions decreases remarkably in such a large particles
   to further deteriorate the symptoms of headache and tension.

1. A real picture of anion
    Development of civilization has caused geometrical increase in the quantity of harmful
    electromagnetic wave, automobiles, smoke, pollution, dust and allergic antigen. The
    density of anion in oxygen has decreased down to 500/cu.m or less in the metropolitan area.
    Two thousand(2,000) to four thousand(4,000) anions are naturally generated
    per 1 cu.m of air in the atmosphere.
    However, there are several hundreds of anions or less per 1cu.m of indoor air due to air pollution.
    Fresh air is abundant in anion and has a positive effect on the nervous message
    delivery matter, an emotional medium that recovers one's temper to emit alpha wave.

2. Measured number of anions
    In nature: 2,000 - 4,000 anoins/cu.m
    Yosemiti waterfall, USA: 100,000 anoins/cu.m or more
    LA expressway, USA: 100 anoins/cu.m or less during peak traffic hours
    Rainbow Fall in Yangsan, Korea: 3,000 - 12,000 anoins/cu.m(1995)
    Mt. Kumjung in Busan, Korea: 500 anoins/cu.m or less(1995)

3. A result of study on the effect that anion and positive ion have on human body

Following is an translation of a clinical report sent by a physician
   at the Municipal Children Health Center in Russia

  Municipal Children Health Center

-case study on the performance of Chungpoong air cleaner
  by a pediatrician.

Twenty five child aged between 2 and 5 were involved in this study.
They suffered from the following diseases:
- Bronchoasthma: 10
- Nervous asthma: 2
- Cold: 10
- Influenza: 3
 
It required 5 to 9 days to treat broncho-asthma patients. It required 9 days to treat nervous asthma patients. It required 2 to 5 days to treat cold patient. The result is as follows:

Broncho-asthma was effectively treated during the 1st day.
The symptom of broncho-asthma disappeared the next day. There was no change in the skin
of nervous asthma patients. They slept well. Cold was also effectively treated.
Cold patients recovered promptly the next day.

The activity, emotion, appetite and sleeping conditions of cold patients were improved.
They positively responded to the ionic therapy.