Headlines and online discussions increasingly highlight rising colorectal cancer rates among younger adults. This trend prompted the American Cancer Society in 2018 to lower the recommended screening age for average-risk individuals from 50 to 45. Building on greater public awareness, the society issued revised guidelines in May 2026 that add new testing methods based on recent research and aim to expand access. A public health researcher with nearly two decades of work on colorectal cancer prevention programs explains that more screening choices can lead to earlier detection or prevention. The updates introduce two new options. One is an at-home stool test that detects hidden blood and molecular markers, recommended every three years. The other is a blood test performed in a doctor’s office for patients who decline colonoscopy or stool testing. Primary methods still include stool tests or visual exams such as colonoscopy. Average-risk adults should begin screening at age 45 and continue until 75 or later if advised. For those with family history, genetic conditions, or symptoms like blood in stool, colonoscopy remains the sole recommended test. Average-risk individuals aged 45 may receive offers for stool or blood tests, though availability varies. The most effective test is the one completed. Colonoscopy stays preferred overall and is required after any positive stool or blood result. Many cases show no early symptoms, making screening at 45 essential for those with risk factors. Common signs include blood in stool, bowel changes, pain, or unexplained weight loss of 10 pounds or more. Lifestyle steps such as daily physical activity, balanced diets, limited processed foods, reduced alcohol, and no smoking can lower risk.
