Darmkankeronderzoek: Mannen laten zich minder testen, deelname vrouwen hoger – wat je moet weten

Rotterdam, Netherlands – Concerns are mounting over persistently low participation rates in colorectal cancer screening programs, particularly among men. While the Netherlands has a national screening program inviting individuals aged 55 to 74 to undergo fecal immunochemical testing (FIT), uptake remains unevenly distributed, with significant disparities observed across different demographic groups and geographic locations. Recent data reveals that men in major cities like Rotterdam are significantly less likely to participate, raising fears that delayed diagnoses will lead to poorer outcomes. This issue isn’t unique to the Netherlands; similar challenges are being observed across Europe and North America, prompting public health officials to explore innovative strategies to improve screening rates and reduce the burden of this preventable cancer.

Colorectal cancer is the second leading cause of cancer-related deaths worldwide, according to the World Health Organization (WHO). However, it is also highly treatable, especially when detected early. Screening programs, like the one in the Netherlands, aim to identify precancerous polyps or early-stage cancers before symptoms develop, allowing for timely intervention and significantly improving survival rates. The FIT test, a non-invasive stool sample analysis, is the primary method used in the Dutch program. If blood is detected in the sample, individuals are invited for a colonoscopy to further investigate the findings.

Disparities in Participation: A Focus on Rotterdam

The city of Rotterdam is experiencing particularly low participation rates among men. Data from Rijnmond news indicates that only slightly more than one in three men aged 55 accept the invitation to participate in the screening program. This figure is alarmingly low, according to Professor Dr. Manon Spaander of Erasmus MC in Rotterdam, who emphasizes that delaying screening until symptoms appear often means the cancer is at a more advanced stage, reducing treatment options and survival chances. The situation in Rotterdam is representative of larger trends observed in other major Dutch cities, highlighting systemic barriers to access and engagement.

Several factors contribute to this disparity. Professor Spaander points to “onwetendheid, taalbarrières, culturele drempels, and a greater group of socially vulnerable inhabitants” as key obstacles. These challenges are compounded by a lack of awareness about the importance of screening and a general reluctance among some men to address health concerns proactively. The iconic “paarse envelop” (purple envelope) containing the invitation often remains unopened, representing a missed opportunity for early detection and potentially life-saving intervention.

Addressing the Barriers: A Multi-pronged Approach

Recognizing the urgency of the situation, the MDL Fonds (a Dutch foundation dedicated to gastrointestinal health, formerly known as the Maag Lever Darm Stichting) has launched a new campaign aimed at raising awareness and encouraging men to participate in the screening program. The campaign features prominent figures, including former footballer Ahmed Ammi, who is currently battling colorectal cancer, and entertainer André van Duin, a survivor of the disease. Their personal stories are intended to resonate with men and motivate them to take control of their health.

A central element of the campaign is the unveiling of a 12-meter-long “Reizende Darm” (Traveling Intestine) at Erasmus MC in Rotterdam. This large-scale model is designed to visually demonstrate how the digestive system works and how colorectal cancer can be detected early. The MDL Fonds hopes this interactive exhibit will help demystify the screening process and alleviate anxieties surrounding it. According to the MDL Fonds, nationally, over 56% of people respond to the initial invitation for screening, but this number drops significantly in urban areas like Rotterdam.

Beyond Awareness: Systemic Improvements and Targeted Interventions

While awareness campaigns are crucial, experts emphasize the need for systemic improvements to address the underlying barriers to participation. This includes tailoring communication strategies to different cultural and linguistic groups, providing accessible information in multiple languages, and addressing socioeconomic factors that may limit access to healthcare. Exploring alternative screening methods, such as home-based FIT tests with simplified instructions and follow-up procedures, could potentially increase uptake rates. The Dutch National Cancer Institute (Kankerregistratie Nederland) continuously monitors screening participation rates and cancer incidence to evaluate the effectiveness of the program and identify areas for improvement.

The issue of low participation extends beyond the Netherlands. In the United States, for example, colorectal cancer screening rates also vary significantly by race, ethnicity, and socioeconomic status. The Centers for Disease Control and Prevention (CDC) actively promotes colorectal cancer screening and provides resources for healthcare providers and the public. The CDC recommends that adults aged 45 to 75 be screened for colorectal cancer, using one of several approved methods, including colonoscopy, FIT, and stool DNA testing.

The Importance of Early Detection and Prevention

Colorectal cancer often develops slowly over many years, beginning as precancerous polyps in the colon or rectum. These polyps may not cause any symptoms, making screening essential for early detection. If polyps are found during a colonoscopy, they can be removed before they have a chance to develop into cancer. Even if cancer is detected, early-stage cancers are typically more treatable and have a higher survival rate. Lifestyle factors, such as a healthy diet, regular exercise, and avoiding smoking, can also play a role in reducing the risk of developing colorectal cancer.

The low participation rates observed in Rotterdam and other urban centers underscore the need for a more targeted and culturally sensitive approach to colorectal cancer screening. By addressing the barriers to access and engagement, and by raising awareness about the importance of early detection, public health officials can significantly reduce the burden of this preventable disease. The MDL Fonds’ campaign, with its focus on personal stories and innovative outreach methods, represents a positive step in the right direction. However, sustained efforts and ongoing investment are essential to ensure that all individuals have the opportunity to benefit from life-saving screening programs.

The Dutch government is expected to release updated data on colorectal cancer screening participation rates in the fall of 2026. Continued monitoring and evaluation will be crucial to assess the impact of current interventions and inform future strategies. Readers are encouraged to discuss colorectal cancer screening with their healthcare providers and to share this information with their friends and family. Your comments and experiences are welcome below.

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