You are over the age of 40. Additional phlegm is being produced, and your cough becomes more moist. The most important remedy for most people who develop COPD is to quit smoking. Deriving these nutrients through what you actually eat is most effective. Dietary supplements will not provide nearly as much benefit.
Beta carotene is found in dark green, orange, red, and deep yellow fruits and vegetables.
Beta carotene offers little protection for those that are still smoking though. Foods high in selenium include seafood, organ meats, lean meats, poultry, low-fat dairy products, and whole grains. Selenium offers strong protection for smokers. Avoid pollutants, which can cause further damage and tissue loss to your already vulnerable lungs. Hold your breath and breathe deeply frequently, which allows your blood to take in more oxygen.