Overweight specifically refers to
an excessive amount of body weight that may come from muscles, bone, adipose tissue,
and water. Obesity specifically refers to an excessive amount of adipose
tissue. Over two-thirds of adults in the United States are overweight or obese,
and over one-third are obese, according to data from the National Health and
Nutrition Examination Survey. Americans are becoming more obese by not eating
properly and getting more sedentary. It is a growing health problem that needs
to be addressed because obesity can lead to more health care costs and more
complicated problems later in life. Scientific evidence clearly shows a link
between poor diet and many degenerative disease, yet there seems to be a sense
of apathy towards eating and feeling healthy. Although genes are an important
factor in many cases of obesity, a person's environment also plays a
significant role. Environmental factors include lifestyle behaviors such as
what a person eats and how active he or she is.
Psychological factors also
influence eating habits and obesity. Many people eat in response to negative
emotions such as boredom, sadness, or anger. People who have difficulty with
weight management may be facing more emotional and psychological issues; about thirty-percent
of people who seek treatment for serious weight problems have difficulties with
binge eating. During a binge-eating episode, people eat large amounts of food
while feeling they can't control how much they are eating.
Obesity increases the likelihood of
various diseases, particularly heart disease, type 2 diabetes, obstructive
sleep apnea, certain types of cancer, osteoarthritis and asthma. Obesity is
most commonly caused by a combination of excessive food energy intake, lack of
physical activity, and genetic susceptibility, although a few cases are caused primarily
by genes, endocrine disorders, medications or psychiatric illness. Evidence to
support the view that some obese people eat little yet gain weight due to a
slow metabolism is limited; on average obese people have a greater energy
expenditure than their thin counterparts due to the energy required to maintain
an increased body mass.
The statistics for obesity rates
today are shocking. 58 million people in the United States are overweight, 40 million
are obese, and 3 million are morbidly obese. Eight out of 10 people over 25 are
overweight. Seventy eight percent of Americans are not meeting basic activity
level recommendations. Twenty five percent of all Americans are completely sedentary.
There has been a seventy-six percent increase in Type II diabetes in adults 30-40
since 1990. Eighty percent of type II diabetes related to obesity. Seventy percent
of cardiovascular diseases are related to obesity. Forty-two percent breast and
colon cancer are diagnosed among obese individuals. Thirty percent of gall
bladder surgeries are related to obesity.
People overweight and obese and
their associated health problems have a significant economic impact on the U.S.
health care system. Direct medical costs may include preventive, diagnostic,
and treatment services related to obesity. Indirect costs relate to morbidity
and mortality costs. Morbidity costs are defined as the value of income lost
from decreased productivity, restricted activity, absenteeism, and bed days.
Mortality costs are the value of future income lost by premature death.
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