Our lungs are a very sophisticated system for
obtaining the oxygen we need to live. Air is
brought into our lungs when we breathe in, and as
it enters our lungs, it passes over membranes
covered in mucus and millions of tiny 'hairs'
called cilia. This layer of mucus and cilia
filters the air, removing pollutants, toxins,
dust, and more to ensure that only pure air
reaches the sensitive interior of the lung. But
this biological filter has a limit to how much
pollutant it can filter-- when we smoke, the smoke
we breathe in quickly overwhelms this protective
layer, coating the membranes with black tar
composed of all the chemicals of the cigarette.
Tobacco and tobacco products contain many
dangerous chemicals that quickly damage biological
Once this natural filtering system
is overwhelmed, additional smoke(and other
pollutants in the air) can get directly into the
sensitive areas of your lungs, coating the
interior with black tar as well.This tar prevents
the lungs from pulling in the oxygen we need
(which is why smokers easily feel out of breath),
causes scar tissue to form in your lungs, and will
lead to more serious diseases and cancer.
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