As with other autoimmune diseases, Type 1 diabetes also has a component of hereditary tendency, but it is not dominant enough to explain the underlying causes. (Inheritance among family members is necessary to isolate elements of nutrition, lifestyle, and environmental impact.)
Type 1 diabetes is an autoimmune disease that affects pancreatic insulin production. Although the result is quite similar, it is significantly different in the causes of diabetes mellitus 2.
There is a high variance of type 1 diabetes in various parts of the world, but it is complicated to identify a clear trend that would indicate the disease's onset at very young ages.
A disease that affects very young people negates (at least partially) the causes of unhealthy nutrition and lifestyle, as these are cumulative effects.
The distribution between men & women is almost identical among type 1 diabetic patients, differently from most other autoimmune diseases in which women have a prominent majority.
Many articles link types of viral morbidity as one of the causes of the disease. The prolonged viral infection is usually the result of a compromised immune system, and the virus in these cases is just the catalyst and trigger for the disease. The logical context is inaccurate; the cause of the disease is the weak immune system and not the virus.