The most powerful antioxidant in the body is carbonic acid. Its created by carbon dioxide, water and the enzyme carbonic anhydrase. Carbonic acid is unstable and quickly becomes bicarbonate. However at any given moment there is a lot of carbonic acid in the body. If you are a snorer, asthmatic, sleep apnic, have high blood pressure, anxiety, diabetes and many other chronic health conditions you are generally low in arterial carbon dioxide and thus low in carbonic acid. The best remedy is to learn to calm your breathing and retain carbon dioxide. Buteyko method.