Colorectal Cancer Archive

A new study found a higher risk of melanoma among people who ate the most fish, but limitations of this research mean it's premature to draw any conclusions about a relationship between eating fish and melanoma risk.

A 2022 study suggests that eating meat (including poultry) fewer than five times a week may protect people from cancer. Consuming only fish and no meat or following a vegetarian or vegan diet may offer even greater protection.

Colorectal cancer is the second leading cause of cancer deaths in the United States, and rates are rising, particularly in younger people. It can be prevented with screening tests; there are several different types of tests that are performed in different ways, and guidelines for when testing should begin and how often people should be tested.

There are several at-home screening tests for colorectal cancer. The most accurate are a fecal immunochemical test (FIT) and a multitarget stool DNA (mt-sDNA) test (Cologuard), also known as a FIT-DNA test. The FIT test uses antibodies to detect blood in stool, and must be done once a year. The FIT-DNA test can identify DNA from cancer cells in the stool and also has a FIT component to look for blood. This test may be repeated once every three years.

Scary or misleading claims about things that may cause cancer are so plentiful that it's hard to know which ones to take seriously. A new website developed by experts aims to provide reliable information about whether a particular cancer claim is true.

A groundbreaking blood test might someday identify cancer in people with unexplained but worrisome symptoms like unexplained weight loss, frequent fatigue, constant nausea, and new pain.

Following a plant-based eating pattern, such as a vegetarian, vegan, or Mediterranean diet, helps manage cholesterol and lower the risk for heart disease. Studies have suggested that some elements of these diets also help protect against cancer, although the best approach is unclear. Experts suggest embracing an overall healthy diet that includes various fruits and vegetables, along with legumes and whole grains, along with cutting down on red meat, processed foods, and sugar-sweetened beverages.

Most people don't benefit from colonoscopies after age 75, but before stopping they should have a discussion with their doctor.

Many cancers might be avoided if people did at least five hours of moderate-intensity exercise per week like brisk walking, biking riding, and water aerobics.