Breathe everyday polluted air of our cities at
rush hour and have a diet high in saturated fat promotes atherosclerosis, that
is to say, the appearance of fatty deposits on artery walls, which can cause a
particular myocardial infarction.
We are millions to face everyday
pollution of the big cities to get to work. Frequent, even short exposure to
particularly high levels of pollution, such as those during the peak hours in
the large cities, can promote atherosclerosis, the development of cholesterol
deposits (atherosclerotic plaques) on the walls arteries. And the risk is
especially great for people who eat too much fat, that is to say, whose diet is
too high in saturated fat, especially if they are already at risk of developing
cardiovascular disease.
Installation of
atherosclerosis
It appears that when the particles
of pollution into the lungs, they cause an inflammatory response in the lung
cells which, in turn, trigger an inflammation of the artery walls, which then
leads to the formation of atherosclerotic plaques and atherosclerosis. The
particles of pollution may also affect the blood vessels in preventing them
from expanding, which is also a manifestation of atherosclerosis.
Of Mice and Men
The New York researchers
responsible for the study observed in laboratory mice they did breathe polluted
air, associated with power plant emissions, exhaust gas cars, dust, soot and
cigarette smoke. The 28 mice experience had all been genetically modified to be
at risk of heart disease. They were divided into two groups: one with a normal
diet and the other a high-fat diet. For 6 months, half the mice in each group
breathed polluted air and the other filtered air. The researchers studied the
state of the aorta and its division of each mouse branches and made the
following observations: - those normally eating and breathing polluted air had
19% of their vessels clogged with atherosclerotic plaques, 13% for a breathable
air filter.- among those subjected to a fatty diet and breathing polluted air,
42% of the examined vessels were clogged with atherosclerotic plaques, 26% of
those breathing air filter.- mice breathing polluted air had higher cholesterol
levels, they normally eat or pas.- mice exposed to pollution had abnormal
dilation of blood vessels, while those subject to fat diet (no matter how good
air breathed) showed even greater damage.
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