Effects of Breath-Holding on Brain Health
Research has been conducted to investigate the impact of breath-holding on the brain, particularly among breath-hold divers and freedivers who frequently engage in voluntary apnea. In one study, a group of nine competitive breath-hold divers and six individuals with limited experience in breath-hold diving were examined. The study revealed that seven out of the nine competitive divers had notably elevated levels of a brain damage marker called S100B. This protein is commonly found in individuals with neurological conditions like Alzheimer’s disease and Down’s syndrome. Although the divers’ S100B levels did not reach harmful levels, it is important to note that voluntary apnea could potentially lead to significant brain damage over time. Nevertheless, further research focusing on the long-term effects of breath-holding is needed to establish conclusive evidence.
Voluntary Apnea Following Hyperventilation
There is a common misconception about the relationship between breathing, holding your breath, and hyperventilation. Many individuals, especially athletes, believe that taking quick, shallow breaths before physical activity enhances the body’s capacity to retain oxygen. However, this is far from the truth. Hyperventilation actually deceives the body into thinking that it requires less oxygen than it actually does. While hyperventilation may temporarily suppress the urge to breathe and slightly improve breath-holding capabilities, it also poses a higher risk of hypoxia. In severe cases, it can even result in loss of consciousness.