Diabetes is a disorder of metabolism-the way our bodies
use digested food for growth and energy. Most of the food that we eat
is broken down into glucose, a form of sugar in the blood. Glucose is
the main source of fuel for the body.
After digestion, glucose passes into the bloodstream, where it is used
by our body cells for growth and energy. For glucose to get into the
cells, insulin must be present. Insulin is a hormone produced by the
pancreas, a large gland behind the stomach. The pancreas is called the
"tongue of our belly" because it has the same shape and size
as the tongue in our mouth.
When we eat, the pancreas is supposed to automatically produce the right
amount of insulin to move glucose
from our blood into our cells. In people with diabetes,
however, the pancreas either produces little or no insulin or the cells
do not respond appropriately to the insulin that is produced. Glucose
then builds up in the blood, overflows into the urine, and passes out
of the body. Thus, the body loses its main source of fuel even though
the blood contains large amounts of glucose.
Type 2 diabetes is the most common form of diabetes. About 90-95%
of people with diabetes have this type. It is usually associated with
older age, obesity, family history of diabetes, history of diabetes
during pregnancy, physical inactivity, and ethnicity. About 80% of people
with type 2 diabetes are overweight.
Many experts agree that obesity is one of the most pressing health problems
facing the country. Over the last twenty years, obesity rates have doubled
in adults and children and tripled in teens. Two-thirds of Americans
are now overweight or obese.
The term BMI is often used when discussing the obesity epidemic, but
what is BMI? BMI stands for Body Mass Index. It
is a number that shows body weight adjusted for height. BMI can be calculated
with simple math using inches and pounds, or meters and kilograms. For
adults aged 20 years or older, BMI falls into one of these categories:
underweight, normal, overweight, or obese. Individuals with a BMI of
25 to 29.9 are considered overweight, while individuals with
a BMI of 30 or more are considered obese.
Body Mass Index can be calculated using pounds and inches with this
equation
BMI = ( Weight in Pounds (Height in inches) x (Height in inches) ) x
703
For example, a person who weighs 220 pounds and is 6 feet 3 inches tall
has a
BMI of 27.5: ( 220 lbs. (75 inches) x (75 inches) ) x 703 = 27.5
In a study published in the Journal of the American Medical Association
(JAMA), the Centers of Disease Control and Prevention (CDC) found that
the increases in both diabetes and obesity were observed in all demographic
and geographic segments of the population. Mississippi was found to
have the highest rates of both obesity and diagnosed diabetes while
Colorado had the lowest rate of obesity and Alaska had the lowest rate
for diabetes. Blacks had the highest rates of both obesity and diabetes
among all races and ethnic groups, and individuals with less than a
high school education had higher rates of both obesity and diabetes
than those with high school education.
The director of the CDC's diabetes program states that these recent,
national increases have more to do with lifestyle than with genetic
make-up. New studies show that healthy eating and regular physical activity
can actually prevent or delay the onset of type 2 diabetes even in high-risk
individuals.
Diabetes is serious - but it is also preventable. We now have scientific
evidence that with modest weight loss, diabetes prevention is proven,
possible and powerful. For more information about diabetes prevention,
call 1-800-438-5383 or visit www.ndep.nih.gov
and get your free GAME PLAN for preventing type 2 diabetes.
Diabetes is serious - but it is also preventable. We now have scientific
evidence that with modest weight loss, diabetes prevention is proven,
possible and powerful.