What form of diabetes mellitus involves the pancreas producing little or no insulin and usually occurs in juveniles and adults up to 40 years of age?

a. Type 1
b. Type 2
c. Type 3
d. Diabetes associated with other syndromes

ANS: A
Type 1, or insulin-dependent diabetes mellitus (IDDM), occurs when the pancreas produces little or no insulin and regular insulin injections are needed. Onset may be at any age but usually occurs in juvenile's ages 12 to 16, and adults up to age 40.