Which type of carbohydrate cannot be digested by humans but is essential for digestive health?

Explanation

Cellulose is a complex carbohydrate that forms plant cell walls. Humans lack the enzyme needed to break down cellulose into simpler sugars for absorption.

Even though we cannot digest it, cellulose acts as dietary fiber that helps move food through the digestive system. Fiber prevents constipation and promotes healthy digestion.

Animals like cows can digest cellulose with help from bacteria in their stomachs. Humans benefit from cellulose as roughage that keeps the intestines working properly.