The phrase "high levels of dietary fiber" refers to a food or nutritional supplement that contains an above-average amount of dietary fiber. Dietary fiber is a type of carbohydrate that is found in plant-based foods such as fruits, vegetables, legumes and whole grains. It is essential for maintaining good health because it helps to regulate the digestive system by promoting regular bowel movements, reducing constipation and preventing colon cancer. High levels of dietary fiber in a person's diet can help improve their overall well-being, as it supports weight management, lowers cholesterol levels, stabilizes blood sugar levels and provides feelings of fullness after eating.