Types of Diabetes

Illustration showing the three main types of diabetes

Type 1 Diabetes

Type 1 diabetes is an autoimmune condition. The immune system attacks the cells in the pancreas that make insulin. People with this type usually need insulin treatment every day.

Type 2 Diabetes

Type 2 diabetes is the most common type. It usually develops when the body becomes resistant to insulin or when the body does not make enough insulin. Lifestyle habits can affect the risk of this type.

Gestational Diabetes

Gestational diabetes develops during pregnancy. It often goes away after birth, but it can increase the risk of type 2 diabetes later in life.

Comparison of the Main Types of Diabetes
Type Main Cause Common Treatment
Type 1 Autoimmune damage to insulin-producing cells Insulin, monitoring, healthy eating
Type 2 Insulin resistance and lifestyle factors Exercise, diet, medication, sometimes insulin
Gestational Hormonal changes during pregnancy Diet planning, monitoring, and medical care

For more background, visit the Diabetes Canada website.