Doctors Talk Less About Colorectal Cancer Screening With Younger Patients, Study Finds

Colorectal cancer has quietly shifted from a disease of the elderly to one that increasingly strikes adults in their forties and even thirties, and a new study suggests that the conversations happening in examination rooms across the United States have not kept pace with that change. Researchers at the American Cancer Society, analyzing nationally representative survey data, have found that clinicians communicate about colorectal cancer screening far less often with younger adults than with those in the traditional screening age range, a gap that could leave millions of patients unaware that guidelines now recommend they start thinking about the disease a full decade earlier than previous generations did.

The study, published in the Journal of General Internal Medicine by Jordan Baeker Bispo and colleagues, examined age-related differences in how clinicians discuss colorectal cancer screening with their patients. Using data from the Health Information National Trends Survey, a publicly available surveillance system administered by the National Cancer Institute, the team assessed whether patients reported receiving key elements of screening communication: a recommendation from their clinician to get screened, discussion of the available test options, and the kind of patient-centered dialogue that helps people weigh the benefits and drawbacks of each choice.

The technical backbone of the analysis matters because it distinguishes genuine communication failures from simple differences in who gets screened. Colorectal cancer screening in the United States is recommended beginning at age 45 for people at average risk, according to the US Preventive Services Task Force, whose 2021 recommendation statement lowered the starting age from 50 in response to rising incidence among younger adults. Screening options span a spectrum of invasiveness and performance: high-sensitivity stool tests such as the fecal immunochemical test, which must be repeated annually; multi-target stool DNA tests performed every one to three years; flexible sigmoidoscopy every five years; and colonoscopy, the most thorough option, typically repeated every ten years when results are normal. Each modality carries different preparation burdens, accuracy characteristics, and follow-up requirements, which is precisely why guideline bodies emphasize shared decision making rather than a one-size-fits-all prescription.

Against that backdrop, the finding that younger adults report less clinician communication about screening is more than a statistical curiosity. A substantial body of evidence, including a systematic review by Peterson and colleagues published in Preventive Medicine, has established that provider-patient communication is one of the strongest predictors of whether people actually complete cancer screening. When a clinician recommends a test, adherence rates climb; when the recommendation is absent, uptake stalls regardless of a patient’s insurance status or education level. The corollary is grim arithmetic: if clinicians are systematically less likely to raise screening with adults in their forties, the very population in which colorectal cancer incidence is rising fastest will be the population least likely to be offered a preventive conversation.

The researchers, whose work was supported by the American Cancer Society, situate their findings within a broader implementation problem in cancer control. Studies of translation timelines have shown that evidence-based practices in oncology routinely take many years to diffuse into routine clinical care, and the 2021 guideline change to age 45 is a textbook case. Primary care clinicians, already stretched across competing prevention priorities, may not have internalized the updated recommendation, may associate colorectal cancer with older patients based on decades of prior teaching, or may face electronic health record systems and quality metrics that still anchor screening reminders to age 50. The result is a lag between what the evidence supports and what patients hear, and the new analysis suggests that lag is measurable in the exam room itself.

Earlier work by the same research community had already hinted at the pattern. A 2025 analysis of Health Information National Trends Survey data published in Cancer Causes Control identified correlates of patient-centered discussions about colorectal cancer screening, and a 2022 study in Preventing Chronic Disease found that even among average-risk patients, clinician recommendations for screening varied substantially. The new study sharpens the picture by placing age at the center of the analysis, quantifying how the probability of receiving a screening recommendation, a discussion of test options, and patient-centered communication changes across the adult lifespan. The direction of the disparity aligns with what cancer surveillance data would predict: diagnoses among adults under 50 have been increasing for years, a trend that prompted the guideline change in the first place.

Why would clinicians communicate differently with younger patients? Several mechanisms are plausible and not mutually exclusive. First, there is the inertia of training and habit: generations of physicians learned that colorectal cancer screening begins at 50, and updating that reflex across an entire workforce takes time. Second, younger patients themselves may be less likely to initiate conversations about cancer screening, perceiving it as a concern for their parents rather than themselves, and clinicians often calibrate their discussions to what patients raise. Third, the structure of preventive care visits, which are shorter and more crowded with competing recommendations than ever, may push screening discussions toward the patients for whom reminders and quality measures fire most reliably. Fourth, there is the question of perceived benefit: clinicians may judge that competing prevention priorities, such as vaccination, mental health screening, and cardiovascular risk management, deserve the limited minutes available with a healthy forty-something patient.

The public health stakes are considerable. Colorectal cancer is among the most preventable of common cancers when screening is performed, because the colonoscopy-based strategies can detect and remove precancerous polyps before they ever become malignant. A meta-analysis published in JAMA Internal Medicine by Dougherty and colleagues demonstrated that interventions to increase colorectal cancer screening rates in the United States are effective across a wide range of settings, meaning the tools to close the gap exist. What the new study adds is a specific target for those tools: the communication encounter itself. If the deficit is concentrated in clinician-initiated dialogue with younger adults, then electronic health record prompts calibrated to the age-45 threshold, clinician education about the updated guidelines, and quality metrics that reward screening initiation in the forties become obvious, testable interventions.

There is also a message for patients in the findings. Adults in their forties should not wait for a clinician to raise the topic; asking about colorectal cancer screening at a routine visit, and asking which test option fits their risk profile and preferences, is a legitimate and evidence-supported step. The shared decision making framework that guidelines endorse works in both directions, and patient-initiated questions are a documented driver of screening completion. For patients with a family history of colorectal cancer or inflammatory bowel disease, the conversation should begin even earlier, since those factors move the recommended starting age below 45.

The study’s authors, based in the Surveillance, Prevention and Health Services Research program of the American Cancer Society in Atlanta, frame their work as a contribution to equity-oriented cancer prevention, and the underlying survey data are publicly available from the National Cancer Institute for other researchers to interrogate. The broader lesson extends beyond one cancer type: as screening guidelines evolve in response to shifting disease epidemiology, the communication channel between clinician and patient is the narrowest and most consequential bottleneck in the entire prevention pipeline. A guideline change that never reaches the exam room changes nothing. This research measures exactly how far the message still has to travel, and for the growing population of younger adults at risk of colorectal cancer, the distance matters in years of potential life that early detection can save.

Subject of Research: Health Communication

Article Title: Age-Related Differences in Clinician Communication About Colorectal Cancer Screening in the USA

Article References: Baeker Bispo, J., Bandi, P., Jemal, A., & Islami, F. (2026). Age-Related Differences in Clinician Communication About Colorectal Cancer Screening in the USA. Journal of General Internal Medicine. https://doi.org/10.1007/s11606-026-10854-0

Image Credits: AI Generated

DOI: 10.1007/s11606-026-10854-0

Keywords: colorectal cancer, cancer screening, health communication, preventive medicine, clinical guidelines, public health, Age-Related, Differences, Clinician, Communication, Colorectal, Cancer