Asthma is a disease that affects the airways, the small tubes that carry air in and out of the lungs. If people with asthma come into contact with substances that irritate the trachea (asthma triggers), the muscles around the tracheal wall will tighten and become narrowed. The surrounding tissue will become inflamed, red and swollen, and sometimes thick phlegm and mucus will accumulate, making the trachea narrower. During the non-onset period, the condition is relatively mild and does not block the trachea, but the chronic condition will exist for a long time.

The cause of asthma is not yet clear, and there is still no drug that can completely cure asthma.

Hydrogen from Hydrogen Inhaler Machine for Human vs Asthma
In 2015, Professors Zhang Ning and Zhang Jingxi published an article in the International Respiratory Journal on the therapeutic effect of inhaling high concentrations on bronchial asthma in rats. Research has found that hydrogen can improve oxidative stress levels in the lungs of rats, changes in lung conditions, and reduce airway resistance.
In 2019, Professor Zhang Qingling, a member of the European Respiratory Society, a member of the American Thoracic Society, a doctor of medicine at the Guangzhou Institute of Respiratory Diseases and the State Key Laboratory of Respiratory Diseases, and chief physician of the Department of Respiratory Medicine, and her research team published a study on hydrogen inhalation-enhanced egg white in the International Journal of Immunopharmacology. The phagocytosis of alveolar macrophages in protein-induced asthma mode is used to study the mechanism of hydrogen treatment from Hydrogen Inhalation Device of asthma to further clarify the role of hydrogen in asthma.
In 2020, scholars from the Peking Union Medical College Hospital of the Chinese Academy of Medical Sciences also published a prospective study in which 10 COPD patients and 10 asthma patients received hydrogen inhalation treatment from H2 Inhalation Device. The results found that the levels of pro-inflammatory factors in the two groups of patients were significantly reduced.