Diabetes: MedlinePlus Medical Encyclopedia
Weight loss
Because type 2 diabetes develops slowly, some people with high blood sugar have no symptoms.
Symptoms of type 1 diabetes develop over a short period. People may be very sick by the time they are diagnosed.
After many years, diabetes can lead to other serious problems. These problems are known as diabetes complications, and include:
Eye problems , including trouble seeing (especially at night), light sensitivity, and blindness
Sores and infections of the leg or foot, which if untreated, can lead to amputation of the leg or foot
Damage to nerves in the body , causing pain, tingling, a loss of feeling, problems digesting food, and erectile dysfunction
Increased chance of having a heart attack or stroke
Exams and Tests
A urine analysis may show high blood sugar. But a urine test alone does not diagnose diabetes.
Your health care provider may suspect that you have diabetes if your blood sugar level is higher than 200 mg/dL (11.1 mmol/L). To confirm the diagnosis, one or more of the following tests must be done.
Blood tests:
Fasting blood glucose level . Diabetes is diagnosed if the fasting glucose level is higher than 126 mg/dL (7.0 mmol/L) on two different tests. Levels between 100 and 126 mg/dL (5.5 and 7.0 mmol/L) are called impaired fasting glucose or prediabetes. These levels are risk factors for type 2 diabetes.
Hemoglobin A1c (A1C) test. Normal is less than 5.7%; prediabetes is 5.7% to 6.4%; and diabetes is 6.5% or higher.
Oral glucose tolerance test . Diabetes is diagnosed if the glucose level is higher than 200 mg/dL (11.1 mmol/L) 2 hours after drinking a sugar drink (this test is used more often for type 2 diabetes).
Screening for type 2 diabetes in people who have no symptoms is recommended for:
Overweight children who have other risk factors for diabetes, starting at age 10 and repeated every 3 years
Overweight adults (BMI of 25 or higher) who have other risk factors
Adults over age 45, repeated every 3 years
Treatment
Type 2 diabetes may be reversed with lifestyle changes, especially losing weight with exercise and by eating healthier foods. Some cases of type 2 diabetes can also be improved with weight loss surgery.
There is no cure for type 1 diabetes.
Treating either type 1 diabetes or type 2 diabetes involves medicines, diet, and exercise to control blood sugar level.
Everyone with diabetes should receive proper education and support about the best ways to manage their diabetes. Ask your provider about seeing a diabetes nurse educator.
Getting better control over your blood sugar, cholesterol, and blood pressure levels helps reduce the risk of kidney disease, eye disease, nervous system disease, heart attack, and stroke.
To prevent diabetes complications, visit your provider at least 2 to 4 times a year. Talk about any problems you are having. Follow your provider's instructions on managing your diabetes.
Support Groups
Many resources can help you understand more about diabetes. If you have diabetes, you can also learn ways to manage your condition and prevent diabetes complications.
Outlook (Prognosis)
Diabetes is a lifelong disease and there is no cure.
Tight control of blood glucose can prevent or delay diabetes complications. But these problems can occur, even in people with good diabetes control.
Possible Complications
After many years, diabetes can lead to serious health problems:
You could have eye problems, including trouble seeing (especially at night), and light sensitivity. You could become blind.
Your feet and skin can develop sores and infections. After a long time, your foot or leg may need to be amputated. Infection can also cause pain and itching in other parts of the body.
Diabetes may make it harder to control your blood pressure and cholesterol. This can lead to a heart attack, stroke, and other problems. It can become harder for blood to flow to your legs and feet.
Nerves in your body can get damaged, causing pain, tingling, and numbness.
Because of nerve damage, you could have problems digesting the food you eat. You could feel weakness or have trouble going to the bathroom. Nerve damage can make it harder for men to have an erection.
High blood sugar and other problems can lead to kidney damage. Your kidneys may not work as well as they used to. They may even stop working so that you need dialysis or a kidney transplant.
Prevention
Keeping an ideal body weight and an active lifestyle may prevent or delay the start of type 2 diabetes. Some medicines can also be used to delay or prevent the start of type 2 diabetes.
At this time, type 1 diabetes cannot be prevented. But there is promising research that shows type 1 diabetes may be delayed in some high risk people.
Alternative Names
Diabetes - type 1; Diabetes - type 2; Diabetes - gestational; Type 1 diabetes; Type 2 diabetes; Gestational diabetes; Diabetes mellitus
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