The study included 1,575 health professionals from the Nurses' Health Study and Health Professionals Follow-up Study who were diagnosed with different stages of colorectal cancer, ranging from stage I to III. Of the total population of the study, 61.1 percent were women, and the mean age was 68.6 years. Data collected over the course of eight years documented 773 deaths, 174 of which were caused by CRC. The study was conducted by Mingyang Song, Kana Wu, and Jeffrey A. Meyerhardt, among others.
Colorectal cancer is a type of cancer that begins in the colon or the rectum. It begins as a growth in the inner lining of large intestines. There are two types of growths, or polyps, which are adenomatous polyps and hyperplastic polyps. Adenomatous polyps change into cancer over the course of several years. Colorectal cancer starts in the innermost layer of the colon (mucosa) and can grow outward to the other layers. This type of cancer can travel to other parts of the body (metastatic) through blood vessels or lymph vessels, and cause other types of cancer.
The study found that individuals with non-metastatic colorectal cancer who consumed more fibrous foods such as cereals and whole grain had a lower chance of death as a result of colorectal cancer as well as overall mortality. Patients who increased their fiber intake (from a lower intake or none at all) improved their chances of survival as compared to those who did not make any changes in their dietary habits.
Increasing the consumption of high-fiber foods may reduce the possibility of developing colorectal cancer or reduce the chances of dying from it. Fiber-rich foods that may help with this include split peas, lentils, black beans, lima beans, artichokes, peas, broccoli, Brussels sprouts, raspberries, blackberries, avocados, pears, bran flakes, whole wheat pasta, and oatmeal.
There have been many studies on cancer, and most studies find that adjusting the patients' diet decreases the impact of its symptoms and even gets rid of cancer itself. Lifestyle changes must be considered when treating cancer, besides medication. Individuals who have higher risks of cancer (family history) should take steps to eat a variety of fruits, vegetables, and whole grains; drink alcohol in moderation, if at all; stop smoking; exercise regularly; and, maintain a healthy weight and body mass index.