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Total carbon dioxide is measured as an indicator of serum bicarbonate and pH balance within the body. Total carbon dioxide is often used in consideration with other biomarkers to help evaluate potential acid-base disturbances. (source)
Low serum carbon dioxide levels can be influenced by physiological factors related to kidney function and respiratory health, as these organs help regulate the body's acid-base balance. From a nutritional standpoint, suboptimal intake of fruits and vegetables can also contribute to decreased serum carbon dioxide levels. (source, source, source, source)
Prioritize high-quality protein: During protein digestion, amino acids are broken down and utilized for energy which then generates carbon dioxide as a byproduct. (source) Recommendation: Eat 0.8 to 1.0 g of protein per pound of body weight per day.
One serving examples: Eggs (3 large eggs), Chicken Breast (3.5 oz), Beef (lean cuts) (3.5 oz), Salmon (3 oz), Pork (lean cuts) (3.5 oz), Tofu (3.5 oz)
Engage in creative pursuits: Creative arts have been shown to optimize serum carbon dioxide. (source) Engagement in creative arts, including music and art therapy, significantly reduces stress, which can cause rapid or shallow breathing resulting in decreased carbon dioxide levels. (source, source) Reducing stress can indirectly improve carbon dioxide levels. Recommendation: Incorporate creative activities, like painting and crocheting, into weekly life.
Supplement with a quality protein source: During protein digestion, amino acids are broken down and utilized for energy which then generates carbon dioxide as a byproduct. (source) Recommendation: Supplement with 20 to 40 g of quality protein with a goal of consuming 0.8 to 1.2 g of protein per pound of body weight per day.
Elevated serum carbon dioxide levels can stem from physiological factors such as impaired lung function, where the lungs are unable to adequately remove carbon dioxide from the body. Additionally, nutritional factors like excessive consumption of acidic foods can contribute to higher carbon dioxide levels. (source, source, source)
Incorporate salt: Sodium intake has been shown to decrease the partial pressure of carbon dioxide. (source) Sodium interacts with proteins in the kidney to increase bicarbonate reabsorption. (source, source) Bicarbonate is the primary source of total carbon dioxide. Reducing bicarbonate levels reduces serum carbon dioxide. Recommendation: Incorporate salty foods or add a pinch of salt to meals.
Perform breathwork and/or meditation: Slowed breathing exercises have been shown to decrease markers of blood carbon dioxide levels. (source) Breathwork can help improve breathing efficiency and promote the removal of carbon dioxide. (source) Recommendation: Sit down and calmly focus on your breath while box breathing for up to five minutes.
Supplement with electrolytes: Sodium intake has been shown to help decrease the partial pressure of carbon dioxide. (source) Sodium, a primary ingredient in electrolyte supplements, interacts with proteins in the kidney to increase bicarbonate reabsorption. (source, source) Bicarbonate is the primary source of total carbon dioxide. Reducing bicarbonate levels reduces serum carbon dioxide. Recommendation: Supplement with a variety of electrolytes with at least 500 mg of sodium.
