A patient with type 1 diabetes has a condition in which his pancreas is completely unable to produce insulin, while a person with type 2 diabetes has a pancreas that can't produce enough insulin or a body that can't use it effectively, according to Healthline. As of 2015, type 1 diabetes has no cure, and a patient with this disorder needs to take insulin to survive. Not all patients with type 2 diabetes have to take insulin.
Symptoms of type 1 diabetes tend to manifest during a patient's childhood or adolescence, explains WebMD. It is usually diagnosed early due to patients falling seriously ill from symptoms of high blood sugar. People with type 2 diabetes are usually diagnosed in adulthood, and the affected person may not have related symptoms before the disorder is discovered. While type 1 diabetes is a condition that cannot be prevented, type 2 diabetes can either be delayed or prevented by adopting healthy habits, such as eating a proper diet, maintaining an exercise regimen and staying at a healthy weight. People with type 1 diabetes are also prone to experiencing episodes of hypoglycemia, or low blood sugar, while patients with type 2 diabetes only go through those episodes if they take insulin or other diabetes medication.