COPD can be subdivided into stages or grades, depending on how far it has progressed. It is most common in smokers and people over the age of 40. Keep reading to learn about the four stages of COPD.

If you're not paying close attention, the first stage can be easy to miss. By the time clear symptoms show up, it may have already damaged your lungs. So if you have a higher risk for COPD ...

Medically reviewed by Brian Bezack, DO Chronic obstructive pulmonary disease (COPD) is an irreversible inflammatory disease of the lungs that makes it more difficult to breathe over time. The disease ...

It’s a formula to rank emphysema by four stages, with 4 being the most serious ... You can’t reverse your emphysema or COPD. But you can ease your symptoms and slow the progress of the ...

This breathing test can detect COPD in its earliest stage, even before any obvious symptoms are noticeable. Healthcare professionals can use these types of tests to help track COPD’s development ...