Does breath-holding affect blood oxygen levels?
Jan 17, 2023
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
Holding your breath can affect blood oxygen levels and is detrimental to health; therefore, it is not advisable to hold your breath for prolonged periods to avoid adverse effects on physical well-being. Breath-holding refers to the conscious act of stopping respiration, or taking a deep or shallow breath followed by closing the glottis while making forceful exhalation efforts. It is important to maintain a healthy diet, eat meals regularly, and avoid overeating. Additionally, moderate physical exercise such as yoga, jogging, and mountain climbing should be incorporated into daily life.
Holding your breath can affect blood oxygen levels and is detrimental to health; therefore, prolonged breath-holding is not recommended to avoid adverse effects on physical well-being.
Breath-holding refers to the conscious act of not breathing, or taking a deep or shallow breath followed by closing the glottis while making forceful expiratory efforts. Blood oxygen refers to the amount of oxygen in the bloodstream. Normal human blood oxygen saturation should be above 95%. Higher oxygen content in the blood supports better metabolism. It's important to note that excessively low blood oxygen leads to inadequate oxygen supply to tissues, while overly high levels may accelerate cellular aging.
Under normal circumstances, breath-holding does have certain effects on blood oxygen. For healthy individuals, short-term breath-holding—less than one minute—typically does not cause significant harm and may even offer benefits such as improved cardiopulmonary function and increased lung capacity. However, prolonged breath-holding reduces blood oxygen saturation, thereby impairing oxygen and blood supply to vital organs such as the brain and heart. This can lead to cerebral hypoperfusion and myocardial ischemia, potentially causing fainting, loss of consciousness, or even serious complications like acute myocardial infarction or angina pectoris. Therefore, long-term breath-holding is not advisable, as it provides no health benefits and may instead cause harm.
In daily life, attention should be paid to maintaining a healthy diet, eating meals regularly, and avoiding overeating. Engaging in moderate physical exercise such as yoga, jogging, or hiking is beneficial, although strenuous activities should be avoided.
