Types of Diabetes

If you have diabetes, your body has problems producing or effectively using insulin, which can cause your blood glucose levels to be out of control. There are several different causes of insulin problems, and your treatment plan will depend on which type of diabetes you have.

Type 1 Diabetes: An Autoimmune Disease

With type 1 diabetes, which used to be called juvenile diabetes, your body does not produce insulin or produces very little. Type 1 diabetes is known as an autoimmune disease because it occurs when your immune system mistakenly attacks the insulin-producing cells in your pancreas.

Type 1 diabetes usually develops in children and young adults and accounts for 5 to 10 percent of diabetes cases in the United States. Symptoms may include thirst, frequent urination, increased hunger, unexplained weight loss, blurry vision, and fatigue.

People who have type 1 diabetes need to take insulin injections daily to make up for what their pancreas can’t produce.

Type 2 Diabetes: The Lifestyle Connection

Type 2 diabetes, which used to be called adult-onset diabetes, is the most common form of diabetes, accounting for 90 to 95 percent of diabetes cases. While most people who develop type 2 diabetes are older, the prevalence of type 2 diabetes in children is on the rise.

The exact cause of type 2 diabetes is largely unknown, but the disease tends to develop in people who are obese and physically inactive. People who have a family history of diabetes or a personal history of gestational diabetes are also at increased risk of developing type 2 diabetes.

Symptoms of type 2 diabetes usually develop gradually, and are similar to symptoms of type 1 diabetes.

Treatment for type 2 diabetes usually includes dietary changes, regular physical activity, and oral diabetes medications to help control blood glucose. If left untreated, serious health conditions such as heart disease or stroke can develop.

Gestational Diabetes: A Pregnancy Concern

Gestational diabetes is a condition that occurs in 3 to 8 percent of pregnant women during late pregnancy. Its cause is thought to be pregnancy-related hormonal fluctuations and a shortage of insulin that often occurs during pregnancy.

Many women with gestational diabetes have no symptoms, so it is important to get screened for this condition during pregnancy. Gestational diabetes can lead to problems such as high-birth-weight babies, breathing problems in the baby, and high blood pressure in the mother during pregnancy. Gestational diabetes is usually treated with dietary changes and exercise, and sometimes insulin injections.

Women who have had gestational diabetes have a 40 to 60 percent chance of developing type 2 diabetes within 5 to 10 years after their pregnancy.

Other Types of Diabetes

Latent autoimmune diabetes in adults, or LADA, is a less common form of diabetes that usually affects people over the age of 30. In LADA, what looks like type 2 diabetes at first eventually develops into a condition more closely resembling type 1 diabetes.

People with LADA make enough insulin at first, but their immune system later begins making antibodies against insulin-producing cells of the pancreas. Patients will usually require insulin injections as part of their treatment. It is estimated that up to 10 percent of people with type 2 diabetes have LADA.

"Double diabetes" occurs when someone with type 1 diabetes develops resistance to the insulin they are taking, a hallmark of type 2 diabetes. This condition is more and more frequently seen in children, especially those who are overweight or obese.

All types of diabetes require attention to keep blood glucose in check, but the medical plan differs by diabetes type. Getting the right diagnosis is the first step.