diabetes
//ˌdaɪəˈbiːtiːz//
Noun
1
A chronic metabolic disease characterized by high levels of sugar (glucose) in the blood, resulting from the body's inability to produce or properly use insulin.
My grandfather was diagnosed with diabetes and now has to monitor his blood sugar levels daily.
2
Specifically, diabetes mellitus, a group of diseases including type 1 diabetes (where the pancreas produces little or no insulin) and type 2 diabetes (where the body becomes resistant to insulin or doesn't produce enough).
She was diagnosed with type 2 diabetes and had to change her diet.