**Core Concept**
Dietary fiber, also known as roughage, is a type of carbohydrate that is not easily broken down by the body. It plays a crucial role in promoting digestive health, satiety, and blood sugar control. A high intake of dietary fiber is associated with numerous health benefits, including improved bowel function, reduced constipation, and lower risk of chronic diseases such as cardiovascular disease and type 2 diabetes.

**Why the Correct Answer is Right**
A high intake of dietary fiber helps to increase stool bulk and promote regular bowel movements. This is due to the ability of fiber to absorb water and swell, which helps to soften and move stool through the digestive system. Additionally, fiber acts as a prebiotic, feeding the good bacteria in the gut, promoting a healthy gut microbiome. This can lead to improved immune function, reduced inflammation, and enhanced overall digestive health.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because a high intake of dietary fiber does not lead to increased hunger or food cravings. In fact, fiber can help to promote feelings of fullness and reduce the desire to snack between meals.
* **Option B:** This option is incorrect because a high intake of dietary fiber does not lead to an increase in blood sugar levels. Instead, fiber can help to slow the absorption of sugar and reduce the risk of developing insulin resistance and type 2 diabetes.
* **Option C:** This option is incorrect because a high intake of dietary fiber does not lead to an increase in the risk of kidney stones. In fact, some studies suggest that a high intake of dietary fiber may help to reduce the risk of kidney stones by increasing the excretion of calcium in the urine.

**Clinical Pearl / High-Yield Fact**
A high intake of dietary fiber is associated with a reduced risk of colon cancer, with a meta-analysis of 25 studies suggesting that a daily intake of 25-30 grams of fiber can reduce the risk of colon cancer by 10-15%.

**Correct Answer:** C.