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Disease Information, Treatments and Possible Cures
Type 1 Diabetes (Insulin Dependent Diabetes Mellitus; Juvenile-onset Diabetes)

Type 1 diabetes is a disorder in which the body does not make enough insulin to meet daily needs. Insulin is a hormone that helps the body convert food into energy. Without insulin, glucose (sugar) from the food you eat cannot enter cells and glucose builds up in the blood. Your body tissues become starved for energy.

Type 1 diabetes usually begins in children and young adults. If type 1 diabetes is not treated effectively, long-term, high blood sugar levels can damage the kidneys, eyes, nerves, and other tissues.

Causes

Most cases of type 1 diabetes are caused by the body's immune system attacking and destroying insulin-producing cells in the pancreas. The current theory is that people whose genes make them prone to this disease are exposed to something in the environment that triggers an immune system attack on the pancreas. The trigger may be a virus, a food, a chemical, or a drug.

Current evidence suggest that enterovirus infection (enteroviruses are common and usually cause diarrhea and fever with or without rash) may contribute to the development of diabetes in some children. Children with relatively high birth weights are more likely to get diabetes than are those with lower weights.

Risk Factors

A risk factor is something that increases your chance of getting a disease or condition. Studies show that the following may be risk factors for developing type 1 diabetes:

  • Family history (parent, sibling) of type 1 diabetes

  • Bottle-feeding or short duration of breastfeeding

  • Birth weight above 4500 grams

  • Other autoimmune illness, including:

    • Hashimoto's disease

    • Graves' disease

    • Addison's disease

    • Pernicious anemia

    • Ethnicity: Northern European or Mediterranean

    • Celiac disease

    • Vitiligo

    • Hypogonadism

Symptoms

Symptoms include:

  • Weight loss

  • Increased urination

  • Extreme thirst

  • Hunger

  • Fatigue, weakness

  • Blurry vision

  • Irritability

  • Skin infections

  • Poor wound healing

  • Headaches

  • Weight loss

  • Reduced or no appetite

  • Impotence

Insulin-producing cell destruction may occur so quickly that ketoacidosis is the first sign of a problem. Symptoms of ketoacidosis include:

  • Vomiting and nausea

  • Abdominal pain

  • Dehydration (not enough fluid in the body)

  • Drowsiness

  • Abnormally deep and fast breathing

  • Coma

  • Dry skin and mouth

  • Fruity breath odor

  • Rapid pulse

  • Low blood pressure

  • Flushed face

Diagnosis

The doctor will ask about your symptoms and medical/family history, and perform a physical exam.

Type 1 diabetes is diagnosed based on the results of blood tests and other criteria, including:

  • Symptoms of diabetes and a random blood test revealing a blood sugar level greater than or equal to 200 milligrams per deciliter (mg/dl)

  • Blood sugar tests after you have not eaten for eight or more hours that reveal blood sugar levels greater than or equal to 126 mg/dl on two different days

  • A glucose tolerance test measuring blood sugar two hours after you consume glucose is rarely necessary to diagnose type 1 diabetes

  • Some children receive testing for insulin levels or anti-pancreas antibodies to confirm the diagnosis of type 1 diabetes

Treatment

Diabetes treatment aims to maintain blood sugar at levels as close to normal as possible. Regular medical care is essential for preventing or delaying complications.

Insulin

Insulin by injection or inhalation replaces what the pancreas would have produced and is essential for life. Insulin doses may be adjusted based on results of blood-sugar tests conducted prior to meals and at bedtime. You will need to administer insulin two, three, or more times daily or wear an insulin pump that continually supplies a small amount of insulin. The pump connects to tubing and a small needle or catheter under the skin.

Diet

  • Follow a balanced meal plan, eating consistent and moderate amounts of food at regular times each day.

  • Do not skip meals.

  • Eat plenty of fruits, vegetables, and fiber.

  • Eat limited amounts of fat.

  • Eat moderate amounts of protein and low-fat dairy products.

  • Avoid foods high in sugar.

  • Eat a bedtime snack with protein and a starchy food.

  • Keep a record of the food you eat to help a dietitian or doctor revise your nutritional needs.

Exercise

Exercise is encouraged when blood sugar levels are under control and there are no complications. Follow your doctor's recommendations for activity levels and restrictions. You may need to adjust your insulin regimen or diet to compensate for low glucose levels associated with exercise.

Blood Sugar Testing

Checking blood sugar levels during the day helps you track the amount of glucose in your blood. Testing is easy with a blood glucose monitor. Keep a record of the results to show the doctor. Your treatment plan may change based on your test results.

Pancreatic Transplantation

This procedure is recommended in the following setting:

  • Severe kidney disease

  • Acute diabetic complications or emergencies not preventable by insulin

  • Severe emotional problems from injecting self with insulin

  • Severe diabetic complications

Prevention

Researchers are studying different immunosuppressive treatments to prevent type 2 diabetes in high-risk patients with antibodies for pancreatic beta cells.

RESOURCES:

American Diabetes Association
http://www.diabetes.org

Canadian Diabetes Association
http://www.diabetes.ca

References:

American Association of Clinical Endocrinologists. American college of Endocrinology. Medical guidelines for the management of diabetes mellitus: the AACE system of intensive diabetes self-management. 2002 update. Endocrine Pract. 2002; 8(Suppl 1)S40-82.

American Diabetes Association website. Available at: http://www.diabetes.org.

The DCCT/Epidemiology of Diabetes Interventions and Complications Research Group. Retinopathy and nephropathy in patients with type 2 diabetes four years after a trial of intensive therapy. N Engl J Med. 2000. 342; 381-9.

National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nccdphp/.

Nutrition principles and recommendations in diabetes. Diabetes Care. 2004; 27(Suppl 1)S36-46.

Pancreas transplantation in type 2 diabetes. Diabetes Care. 2004; 27:S105.

Physical activity/exercise and diabetes. Diabetes Care. 2004; 27(Suppl 1)S58-62.

Scheid DC, McCarthy LH, Lawler FH, et al. Screening for microalbuminuria to prevent nephropathy in patients with diabetes: a systematic review of the evidence. J Fam Pract. 2001; 50:661-8.


Living with type 1 diabetes

Amy is a 30-year-old dietitian from California. She has been living with type 1 diabetes for 23 years. She combines diet, exercise, and medication to manage her disease.

What was your first sign that something was wrong? What symptoms did you experience?

When I was 7 years old, I was sitting in church with my parents one morning and began experiencing extreme thirst. I had to get a drink and go to the bathroom before the service was over. Then, I was very thirsty again by the time we got home. My father, who had type 1 diabetes, was aware that these were potential symptoms and so I was checked for diabetes.

What was the diagnosis experience like?

I went to a local health clinic where they gave me an oral glucose tolerance test, in which I drank a cola syrup and then had several blood draws over four hours. The results were positive for diabetes. I was admitted to a hospital so that they could get my blood sugars under control and educate me about my condition. I was taught how to test my urine—there weren’t blood glucose meters at that time—and how to give myself insulin. I had to practice injecting insulin on a grapefruit and a doll. I was also taught about meal planning and diabetic exchanges.

What was your initial and then longer-term reaction to the diagnosis?

When I was first diagnosed, I didn’t like being “different.” My first day back at school after being diagnosed was my 8th birthday and, to celebrate, the teacher had grapefruit sections and Ritz crackers for me and cupcakes for the rest of the class. That was frustrating. I remember being mad at my Mom, because I thought it was somehow her fault that all of a sudden I was being treated differently. But while I was mad at my Mom, I was also, for the first year or so, afraid to be away from her, in case I had an insulin reaction or something.

When I hit adolescence, I was very angry that I had this disease and I rebelled against it. I never did anything drastic, like skip injections, but I wouldn’t tell people I had diabetes and I’d make sure that I’d cover up reactions so no one else knew. When I went to college and majored in nutrition, I finally came to terms with the fact that this is a chronic disease and if I want to live a long, healthy life, I’ve got to take care of myself.

How do you manage type 1 diabetes?

I’m on intensive insulin therapy, which means I take three to four injections a day. The dose is based on my blood glucose readings. Diet is a big factor in management. I do carbohydrate counting, which means that I aim for a certain number of grams of carbohydrate at each meal and snack and my insulin dose is based on that. But I can also adjust my insulin based on my meals, exercise patterns, and special circumstances, such as Thanksgiving, when I know there will be a lot of carbohydrate-rich foods. And then there’s exercise, which is also crucial to my management. Exercise not only helps control my blood sugars, but for me it’s a big stress reliever, and stress drives my blood sugars through the roof.

Did you have to make any lifestyle or dietary changes in response to type 1 diabetes?

When I was first diagnosed, the prescribed diet was “diabetic exchanges.” And, of course, there was the “DO NOT EAT SUGAR” rule, which made things difficult, especially since all the sugar-free products they made back in the 70s were pretty awful. Now, carbohydrate counting, regular exercise, and stress management are very helpful to me.

Did you seek any type of emotional support?

Yes, but I’ve found it difficult to find support for someone at my stage of the game and with my level of knowledge. There are several support groups and counselors who work with people who are newly diagnosed and who are frightened and don’t know what to expect or how to deal with this major change of life. I’m past that point, but I still have concerns and frustrations related to my condition. Unfortunately, I don’t have any close friends or colleagues who also have type 1 diabetes and can relate to and understand me. I could discuss certain things with my Dad, but it was still different because he wasn’t my peer.

Does type 1 diabetes have an impact on your family?

Absolutely. When I was first diagnosed and when I was being a rebellious teenager, my family worried a lot about me. And now that I’m a single woman living alone, they continue to worry.

What advice would you give to anyone living with type 1 diabetes?

Get as much education as you can. A single visit with a dietitian is not sufficient. Get as many visits as your health insurance will cover and get a visit with a certified diabetes educator if the dietitian isn’t one. Also see a nurse to learn about other aspects of care, such as what to do when you’re sick, how to care for your feet, etc. And then, exercise, exercise, exercise! There’s so much stress related to having a chronic disease. Anything you can do to control stress will make any other aspect of management easier.

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