When you roam in the forest or park, linger in front of a waterfall, or relax on the beach, you often feel the air is particularly fresh and breathing is exceptionally comfortable.

This sensation of relaxation and joy is due to the presence of negative air ions (NAIs).

As early as 1931, a German doctor discovered that in a closed research room, high concentrations of negative ions made people feel comfortable and refreshed, while high concentrations of positive ions caused tightness, dizziness, and irritability.

This discovery sparked great interest, leading to extensive research on negative ions and their impact on human health and well-being. Over the years, significant progress has been made in understanding the benefits of negative ions, which has profound implications for our lives.

Negative air ions are produced when air molecules are energized by cosmic rays, sunlight, electromagnetic waves, radioactive decay from rocks and soil, ocean waves, waterfalls, forests, and various meteorological activities. These processes result in the release of free electrons, which are then captured by oxygen molecules, forming negative air ions. Therefore, negative air ions are also referred to as "negative oxygen ions."

One notable observation is the presence of five longevity villages in the world, where the average life expectancy exceeds 90 years. These villages have remarkably low incidences of cancer, cardiovascular diseases, and diabetes, with elderly residents often living disease-free until death. Studies have shown that one of the most important factors contributing to the longevity of these populations is the high concentration of negative ions in the air, which is up to 100 times higher than in urban areas.

In the medical field, negative ions are recognized as an effective means to kill germs and purify the air. Negative ions attach to positively charged bacteria, causing structural changes or energy transfers that lead to the bacteria's death. The dead bacteria then settle on the ground, effectively removing them from the air. This antibacterial property of negative ions makes them valuable in improving indoor air quality.

Medical research has demonstrated that negative ion therapy can neutralize toxic oxygen radicals and convert body tissues and fluids from acidic to weakly alkaline states. This change increases the oxygen content in the blood, enhancing the delivery, absorption, and utilization of blood oxygen. Improved blood oxygenation supports various physiological functions, promotes metabolism, and boosts the immune system. Research indicates that negative ions can have inhibitory, alleviating, and auxiliary therapeutic effects on nearly 30 types of diseases across seven human systems. Their role in enhancing human health is particularly significant, earning negative ions titles such as "environmental police," "air vitamins," and "atmospheric longevity factors."

The therapeutic potential of negative ions extends to various aspects of health. For instance, they are known to improve respiratory function, alleviate symptoms of allergies and asthma, reduce stress, and enhance mood. Negative ions are believed to increase serotonin levels, which can help alleviate depression and anxiety. They have been found to improve sleep quality by regulating melatonin levels. Negative ions can have positive effects on cognitive performance. Studies have shown that exposure to negative ions can enhance mental clarity, increase alertness, and improve overall cognitive function. This makes environments rich in negative ions, such as natural settings, ideal for activities requiring focus and mental acuity.