Noninfectious Disease / medical books
Diseases
not known to be caused by infectious agents include the three leading
killers in the United States and other developed countries: heart
disease, most cancers, and cerebrovascular disease (decreased blood
circulation in the brain). Noninfectious illnesses include disorders
as terrifying as Alzheimer's disease, which robs victims of their
memory and their ability to reason, and as pesky as poison ivy.
Degenerative disorders, including arthritis, Parkinson disease,
and Alzheimer's disease, involve the progressive breakdown of tissues
and loss of function of parts of the body. Joints gradually become
stiff; bones become brittle; blood vessels become blocked by deposits
of fat. The incidence of these problems increases with age , and,
in at least some cases, progression can be slowed by good health
habits.
Environmental factors play critical roles in numerous noninfectious
diseases. Exposure to carbon monoxide can have long-term effects
on the heart and vision. Lead in drinking water can impair children's
mental abilities and increase blood pressure in adults. Occupational
exposure to coal dust, cotton dust, and asbestos predisposes workers
to black lung, brown lung, asbestosis, and other respiratory diseases
(Occupational and Environmental Diseases). Other diseases are caused
by an addiction to a harmful substance. Tobacco smoking is a prime
culprit in emphysema, as well as lung cancer and other respiratory
diseases. Excessive use of alcohol can lead to liver disease, brain
damage, and nutritional disorders.
Repetitive stress injuries result from repeating certain motions,
usually from a fixed or awkward posture. Twisting items on a factory
assembly line, carrying bulging mailbags, using vibrating tools
such as pneumatic hammers, or practicing the piano or a tennis stroke
for hours on end can all result in pain, inflammation, and permanent
nerve damage.
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