What is the primary cause of Lactose intolerance, a common metabolic disorder?

A Deficiency of lactase enzyme ✓
B Overproduction of lactose
C Impaired absorption of glucose
D Excessive consumption of dairy products

Explanation

Lactose intolerance occurs when the small intestine does not produce enough lactase, the enzyme that digests lactose, a sugar found in milk and other dairy products.

Mnemonic

Lactase = Locks Away Carbs To Ease Symptoms Everyday

Source

National Institute of Diabetes and Digestive and Kidney Diseases
Metabolic and Nutritional Disorders Nutrition and Metabolism Carbohydrate Metabolism Easy MEDICAL Confidence: high