What is the primary cause of ketosis in uncontrolled type 1 diabetes mellitus?

A Insulin deficiency ✓
B Glucagon excess
C Epinephrine excess
D Cortisol deficiency

Explanation

In uncontrolled type 1 diabetes mellitus, the lack of insulin leads to a decrease in glucose uptake by cells, resulting in the breakdown of fat for energy and the production of ketone bodies, causing ketosis.

Mnemonic

I.D. = Insulin Deficiency

Source

Guyton and Hall Textbook of Medical Physiology
Metabolic and Nutritional Disorders Endocrinology Diabetes Mellitus Medium NURSING Confidence: high