Type 2 Diabetes
Type 1 Diabetes affects the regulation of blood sugar. The body has and insulin resistance. At first, the pancreas tries to make extra insulin to make up for it, but it fails and the body is physically unable to keep the blood glucose at normal levels.
Insulin is vital to keeping type 1 diabetes under control.
http://www.diabetes.co.uk/insulin/how-to-inject-insulin.html
This is the pancreas; an organ greatly affected by type 1 diabetes.
Symptoms
Symptoms of type 1 diabetes include urinating often, feelings of extreme thirst, feelings of extreme hunger, even if you're eating enough, extreme fatigue, blurred vision, slow-healing cuts or bruises, and weight loss, even with increased calorie intake.
Treatment
Type 1 diabetes must be controlled through by insulin injections. There are a variety of types of insulin, which act differently. This is due to the fact that not everyone with type 1 diabetes is affected in the same way. People with type 1 diabetes must get a flu shot every year, and many take herbal and or dietary fiber supplements.
http://www.diabetes.org/living-with-diabetes/treatment-and-care/medication/oral-medications/