How a High-Fiber Diet May Cut Colorectal Cancer Risk by 21%

Colorectal cancer affects the colon or rectum. Health organisations recommend lifestyle changes to lower the risk of this disease. These include regular exercise, keeping a healthy weight, and eating a balanced diet. The American Cancer Society advises physical activity and a moderate weight to reduce colorectal cancer risk. The American Institute for Cancer Research suggests a daily fiber intake of 30 grams for the same purpose. A 2011 study found that people with the highest fiber intake had a 14% to 21% lower risk of colon cancer.

Dietary fiber may help by increasing stool bulk and speeding up transit time. It also produces short-chain fatty acids, which could offer protection. Good fiber sources include fruits, vegetables, whole grains, legumes, nuts, and seeds.

A 2015 study showed that dietary fiber had a strong protective effect against colorectal cancer in Asian adults. Some research supports the link between higher fiber intake and lower cancer risk. However, experts say more studies are needed to fully understand this relationship. Meeting fiber needs can also reduce the risk of heart disease, diabetes, and obesity. Experts agree that a high-fiber diet may lower colorectal cancer risk. They also note benefits for other health conditions. Further research will clarify how fiber and cancer prevention are connected.