Diabetes main page

(free software for viewing and printing PDF format, you will need Adobe Acrobat Reader from Adobe Systems. This software is free and you may download it here.)

What Is Diabetes?
Diabetes is a disorder of metabolism--the way our bodies use digested food for growth and energy. Most of the food we eat is broken down into glucose, the 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 cells for growth and energy. For glucose to get into cells, insulin must be present. Insulin is a hormone produced by the pancreas, a large gland behind the stomach.

When we eat, the pancreas is supposed to automatically produce the right amount of insulin to move glucose from 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 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.

What are the signs of diabetes?
The signs of diabetes are:

being very thirsty
urinating often
feeling very hungry or tired
losing weight without trying
having sores that heal slowly
having dry, itchy skin
losing the feeling in your feet or having tingling in your feet
having blurry eyesight

You may have had one or more of these signs before you found out you had diabetes. Or you may have had no signs at all. A blood test to check your glucose levels will show if you have pre-diabetes or diabetes.

Who gets diabetes?

people of any age
people with a family history of diabetes
most common in older people, overweight and sedentary people, African Americans, Alaska Natives, American Indians, Asian and Pacific Islander Americans, and Hispanic Americans

Why do you need to take care of your diabetes?

After many years, diabetes can lead to serious problems in your eyes, kidneys, nerves, and gums and teeth. But the most serious problem caused by diabetes is heart disease. When you have diabetes, you are more than twice as likely as people without diabetes to have heart disease or a stroke.

If you have diabetes, your risk of a heart attack is the same as someone who has already had a heart attack. Both women and men with diabetes are at risk. You may not even have the typical signs of a heart attack.

You can reduce your risk of developing heart disease by controlling your blood pressure and blood fat levels. If you smoke, talk with your doctor about quitting.

National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health