Soluble fibre is characterized by which of the following?

• A. Some absorbed, lowers cholesterol levels
• B. Not absorbed, helps digestion
• C. All absorbed, lowers cholesterol levels
• D. Provides energy

Answer: (A)

Soluble fibre is a non-digestible carbohydrate that stays in the gut rather than being absorbed in the small intestine. It dissolves in water to form a gel, which slows gastric emptying and intestinal transit, helping digestion and keeping stools regular. It also reaches the colon where it can be fermented by bacteria, contributing to gut health and, through interactions with bile acids, helping to lower LDL cholesterol over time. The description that best fits soluble fibre is that it is not absorbed and it helps digestion. Descriptions claiming some or all absorption are inaccurate, and while fermentation can provide some energy indirectly, the main characteristic used here is its non-absorption and digestive benefits.