Oxygen therapy is a form of treatment that uses oxygen to heal various disease conditions and strengthen the immune system. Hyperbaric oxygen therapy (HBO) is a mainstream treatment that involves placing the patient in a pressurized chamber with pure oxygen (O₂). Bio-oxidative therapies are alternative treatment approaches that emphasize increasing the oxygen content of the blood through proper breathing and diet, together with the use of ozone and/or hydrogen peroxide in the treatment of specific diseases or weakened immune systems. Ozone therapy is considered a mainstream form of medical treatment in Germany, Austria, Switzerland, France, and Russia.

HBO therapy is used to reverse conditions or processes caused by inadequate oxygen in the body (e. g., asthma, carbon monoxide poisoning, smoke inhalation, decompression sickness, and mountain sickness) or to speed up the healing of injuries or infections by increasing the amount of oxygen in body tissues...