Condition That Requires People to Use Insulin
This page is the CodyCross answer for the clue below from Train Travel, Group 704, Puzzle 3 (First Class).
Question is: Condition That Requires People to Use Insulin
and the answer is: DIABETES
Word Meaning:
DIABETES — (pathology) Diabetes mellitus; any of a group of metabolic diseases whereby a person (or other animal) has high blood sugar due to an inability to produce, or inability to metabolize, sufficient quantities of the hormone insulin.
Definitions from Wiktionary.