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As for "healing" lungs that are not infected, here is a list of nutrients that will help and maybe cure.
1. Zinc & Vit-A are very important for the integrity and repair of Lungs
2. Quercetin reduces the inflammation that prevents healing.
3. Raw Lung Glandular hastens repair.
4. Comfrey herb is very effective in regeneration of epithelial tissue such as lungs, but is somewhat toxic so caution is advised in it's use. Solaray has a lung formula called "Comfree" that may help.
5. Omega 3 Fatty Acids (EFA's) like Fish or Krill Oil, Chia and Flaxseed Oil, are very important for reducing inflammation and promoting healing.
6. Chlorella Extract is a good cleanser and has it's own growth factors that may help.
7. Boosting natural levels of Human Growth Hormone (HGH) will help. HGH is converted into IGF-1 in the liver so supplements like Deer Antler Velvet have therapeutic IGF-1.