A shocking video demonstrates the difference between a non-smoker's lungs and those of a smoker who smoked a whole pack of cigarettes every day for 20 years.
The video, uploaded by North-Carolina based nurse Amanda Eller, shows the black, cancer-ridden lungs of a heavy smoker failing to inflate properly.
This is in comparison with the healthy, red-colored lungs which are shown inflating and deflating as usual in the videos, which have been shared over 5,000 times.
Around 15% of adults in the US and 17% in the UK smoke cigarettes.
A video shows the difference between healthy lungs (right) and those of a heavy smoker (left)
The black, cancer-ridden lungs of a pack-a-day smoker failed to properly inflate when pumped
The healthy, non-smoker's lungs filled to full capacity and then deflated slowly as normal
Nurse Amanda Eller explained healthy lungs can recoil, which prevents breathlessness
Smoking raises the risk of developing lung cancer by approximately 23 times and is responsible for 87% of all related deaths.
While trying to inflate the blackened lungs, one woman, believed to be Ms. Eller, said: "Because these lungs are COPD, cancerous lungs, the elastance is gone, so they will stretch out, but then the recoil of them just snaps right back."
Elastance refers to the ability of lungs to rebound after being stretched during inhalation.
Reduced elastance suggests that the lungs are stiff and have to work even more vigorously to bring in sufficient air, leaving individuals breathless.
When a PEP valve was fitted to the diseased lungs, their capacity to inflate slightly improved. A PEP valve helps to clear and open airways in cystic fibrosis patients.
These diseased lungs were compared to healthy, red organs, which swelled to full capacity when filled with air.
Ms. Eller continued: "You can see [after] inhalation and [during] expiration [the lungs] totally deflate."
When a PEP valve was added to the healthy lungs, their rate of deflation slowed even more, which would allow people to absorb more oxygen.
This comes after a hard-hitting TV advert released last December demonstrated how poisons from cigarette tar enter the bloodstream and flow through the body within seconds, damaging major organs.
The campaign also notes how smoking can lead to elevated levels of cadmium, a metal used in batteries, in the blood, and cancer-causing nitrosamines and carbon monoxide.
Public Health England (PHE) released the advert to urge the country's seven million smokers to attempt quitting in the New Year.
PHE director of health improvement Professor John Newton said that people know tar wreaks havoc on the lungs, but it's less well understood that these toxins also reach the other major organs in our body.
Reference: Daily Mail
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