What is a common symptom of excessive carbon dioxide?

Light headedness is a common symptom of excessive carbon dioxide in the body, also known as hypercapnia. When carbon dioxide levels rise due to inadequate ventilation or other respiratory issues, it leads to a decrease in the blood’s pH level, creating an acidic environment. This change in the body can cause various neurological symptoms, including lightheadedness, as the brain is particularly sensitive to fluctuations in blood gas levels. The feeling of lightheadedness may also stem from decreased oxygen delivery to the brain as elevated carbon dioxide levels disrupt normal gas exchange.

Understanding this symptom is vital for divers, as managing carbon dioxide levels is essential to prevent complications during dives. Maintaining proper ventilation and avoiding situations that lead to CO2 buildup, such as prolonged breath-holding or inadequate air supply, are key practices for maintaining safety underwater.