Final answer:
A high-fat diet rich in animal protein and refined carbohydrates is associated with an increased risk of colorectal cancer. Increasing dietary fiber intake, especially from fruits, vegetables, and whole grains, is known to decrease this risk.
Step-by-step explanation:
The diet associated with an increased risk of colorectal cancer is a diet high in animal fat and protein, as well as refined carbohydrates. This is because excess consumption of animal fats and proteins, often found in processed meats and red meats, can contribute to the risk of cancer development. Additionally, high intake of refined carbohydrates, also known as simple carbohydrates, which are found in foods like white bread and sugary snacks, are associated with this risk. It's important to note that dietary fiber from sources such as fruits, vegetables, and whole grains is inversely associated with the risk of colon cancer.