Your Lungs How the Lungs Remove Toxins Every time you breathe out, your body is eliminating waste. The primary substance removed is carbon dioxide (CO₂) , a natural byproduct of cellular metabolism that must be continuously expelled to maintain balance in the body. But it doesn’t stop there. The lungs also help eliminate: Volatile organic compounds (VOCs) Certain environmental toxins Byproducts of inflammation and oxidative stress 👉 These compounds diffuse from the bloodstre