Type 1 diabetes defined by severe insulin deficiency occurs after 30  years of age and is commonly treated as type 2 diabetes

Conclusions/interpretationType 1 diabetes diagnosed over 30  years of age, defined by severe insulin deficiency, has similar clinical and biological characteristics to that occurring at younger ages, but is frequently not identified. Clinicians should be aware that patients progressing to insulin within 3 years of diagnosis have a high likelihood of type 1 diabetes, regardless of initial diagnosis.
Source: Diabetologia - Category: Endocrinology Source Type: research