Which statement about insoluble dietary fiber is supported by the material?

Which statement about insoluble dietary fiber is supported by the material?

• A. It can decrease blood cholesterol
• B. It has no effect on cholesterol
• C. It is a vitamin
• D. It is a mineral

Answer: (A)

Insoluble fiber can influence cholesterol levels by reducing its reabsorption in the digestive tract. The material states that insoluble dietary fiber can decrease blood cholesterol, which fits with the idea that fiber helps move cholesterol and bile acids out of the body through the stool. When more bile acids are excreted, the liver pulls more cholesterol from the blood to make new bile acids, lowering circulating cholesterol. The other options are not consistent with the material: fiber isn’t a vitamin or a mineral, and the material indicates there is an effect on cholesterol, so saying there’s no effect isn’t supported.

Insoluble fiber can influence cholesterol levels by reducing its reabsorption in the digestive tract. The material states that insoluble dietary fiber can decrease blood cholesterol, which fits with the idea that fiber helps move cholesterol and bile acids out of the body through the stool. When more bile acids are excreted, the liver pulls more cholesterol from the blood to make new bile acids, lowering circulating cholesterol. The other options are not consistent with the material: fiber isn’t a vitamin or a mineral, and the material indicates there is an effect on cholesterol, so saying there’s no effect isn’t supported.