The Health Effects of Obesity:
34.9% or 78.6 million of U.S. adults are obese.
Obesity has a far-ranging negative effect on health. Each year obesity-related conditions cost over $100 billion and cause an estimated 300,000 premature deaths in the U.S. The health effects associated with obesity include, but are not limited to, the following:
· High blood pressure - Additional fat
tissue in the body needs oxygen and nutrients in order to live, which requires
the blood vessels to circulate more blood to the fat tissue. This increases the
workload of the heart because it must pump more blood through additional blood
vessels. More circulating blood also means more pressure on the artery walls.
Higher pressure on the artery walls increases the blood pressure. In addition,
extra weight can raise the heart rate and reduce the body's ability to
transport blood through the vessels.
· Diabetes - Obesity is the major cause of type 2
diabetes. This type of diabetes begins in adulthood. Obesity can cause
resistance to insulin, the hormone that regulates blood sugar. When obesity
causes insulin resistance, the blood sugar becomes elevated. Even moderate
obesity dramatically increases the risk of diabetes.
· Heart disease - Atherosclerosis
(hardening of the arteries) is present 10 times more often in obese people compared
to those who are not obese. Coronary artery disease is also more prevalent
because fatty deposits build up in arteries that supply the heart. Narrowed
arteries and reduced blood flow to the heart can cause chest pain (angina) or a
heart attack. Blood clots can also form in narrowed arteries and cause a
stroke.
· Joint problems,
including osteoarthritis - Obesity can affect the knees and hips because of the
stress placed on the joints by extra weight. Joint replacement surgery, while
commonly performed on damaged joints, may not be an advisable option for an
obese person because the artificial joint has a higher risk of loosening and
causing further damage.
· Sleep apnea and
respiratory problems - Sleep apnea, which causes people to stop breathing for
brief periods, interrupts sleep throughout the night and causes sleepiness
during the day. It also causes heavy snoring. Respiratory problems associated
with obesity occur when added weight of the chest wall squeezes the lungs and
causes restricted breathing. Sleep apnea is also associated with high blood
pressure.
· Cancer - In women, being
overweight contributes to an increased risk for a variety of cancers including
breast, colon, gallbladder and uterus. Men who are overweight have a higher
risk of colon and prostate cancers.
· Metabolic syndrome - The National
Cholesterol Education Program has identified metabolic syndrome as a complex
risk factor for cardiovascular disease. Metabolic syndrome consists of six
major components: abdominal obesity, elevated blood cholesterol, elevated blood
pressure, insulin resistance with or without glucose intolerance, elevation of
certain blood components that indicate inflammation, and elevation of certain
clotting factors in the blood. In the U.S., approximately one-third of
overweight or obese individuals exhibit metabolic syndrome.
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