Adult lung tissue does not regenerate beyond the local level, where localized progenitor cells are capable of epithelial repair²⁴. However, in lung disease, these progenitor cells are either not appropriately stimulated, are dysregulated, or do not possess the regenerative capacity to restore lung function²⁴.

How long does it take for lung tissue to regenerate?

Over time, the tissue heals, but it can take three months to a year or more for a person's lung function to return to pre-COVID-19 levels. “Lung healing in of itself can produce symptoms,” Galiatsatos says. “It is similar to a leg bone breaking, needing a cast for months, and having the cast come off.

Can you repair damaged lung tissue?

The lungs' large surface area exposes the organ to a continual risk of damage from pathogens, toxins or irritants; however, lung damage can be rapidly healed via regenerative processes that restore its structure and function.