28 april 2025: Bron: Integraal Kankercentrum Nederland

Uit nieuw onderzoek van het Integraal Kankercentrum Nederland (IKNL) blijkt dat jonge mensen van jonger dan 50 jaar vaker geconfronteerd worden met darmkanker. De analyse van ruim 20.000 patiënten over de periode 1989-2023 laat zien dat het aantal nieuwe darmkankerpatiënten per jaar onder 15- tot 49-jarigen in Nederland significant is gestegen in de periode 1998-2023. In 1998 werden er 6,3 gevallen per 100.000 personen vastgesteld, terwijl dit aantal in 2023 was toegenomen tot 9,5 per 100.000 personen. Dat betekent dat 654 Nederlanders van 15 t/m 49 jaar de diagnose darmkanker kregen in 2023.

Zie deze grafiek gekopieerd uit studierapport:



Figuur: Geobserveerde (1989-2023) en verwachte (2024-2035) incidentiecijfers van darmkanker bij mannen en vrouwen jonger dan 50 jaar in de periode 1989-2035 in Nederland, absolute aantallen. De punten zijn de geobserveerde waardes, de lijnen geven de voorspelde waardes (doorgetrokken) en de 80% (gestreept) en 95% (gestippeld) voorspellingsintervallen aan.

Op zich zijn dat in verhouding tot mensen ouder dan 50 jaar die de diagnose darmkanker krijgen geen grote aantallen , maar procentueel: 1,4 procent per jaar afgelopen dertig jaar, is dit behoorlijk veel.  Ook wereldwijd is er sprake van een behoorlijke sterke stijging. Zelfs nog meer dan in Nederland. Aldus de onderzoekers van het IKNL onder leiding van Marloes Elferink en collega’s. 

De onderzoekers schrijven dat een verandering van leefstijl een grote rol speelt in die stiojging: de afgelopen jaren zijn mensen gemiddeld genomen zwaarder geworden, ze bewegen minder, eten meer bewerkt vlees, drinken meer alcohol en gesuikerde frisdranken. En dat zijn allemaal risicofactoren voor het ontstaan van darmkanker. 

Een ander punt van zorg is dat bij klachten van buikpijn en darmklachten bij jongere mensen niet direct gedacht wordt aan darmkanker waardoor wanneer het uiteindelijk toch darmkanker blijkt te zijn dit in een verder gevorderd stadium is dan bij oudere mensen. 

Het volledige studieverslag is gepubliceerd in het Nederlands Tijdschrift voor Geneeskunde. 


Hier het artikel op de website van het IKNL:

Darmkanker neemt toe bij jonge mensen, maar blijft relatief zeldzaam


In Nederland krijgen steeds meer mensen onder de 50 jaar darmkanker. Uit onderzoek van Marloes Elferink van IKNL en collega’s blijkt dat dit aantal de afgelopen decennia is gestegen en naar verwachting verder zal toenemen. Toch blijft darmkanker op jonge leeftijd zeldzaam. De bevindingen, gebaseerd op cijfers uit de Nederlandse Kankerregistratie (NKR), laten zien hoe belangrijk het is dat artsen en patiënten zelf alert zijn en dat er meer onderzoek komt naar oorzaken en manieren om de ziekte te voorkomen.

Het onderzoek, gepubliceerd in het Nederlands Tijdschrift voor Geneeskunde, is uitgevoerd naar aanleiding van internationale rapportages die wijzen op een wereldwijde stijging van darmkanker bij jonge mensen.>>>>>>>lees verder


Ook de Volkskrant heeft er een lezenswaardig artikel aan gewijd: 

Darmkanker treft vaker jongeren, stijging baart artsen zorgen: ‘Onze jongste patiënten zijn 18 jaar’


The Lancet publiceerde eerder een studie over dezelfde problematiek. Hier het abstract van deze studie:

ArticlesVolume 9, Issue 8e583-e593August 2024Open access

Differences in cancer rates among adults born between 1920 and 1990 in the USA: an analysis of population-based cancer registry data



Summary

Background

Trends in cancer incidence in recent birth cohorts largely reflect changes in exposures during early life and foreshadow the future disease burden. Herein, we examined cancer incidence and mortality trends, by birth cohort, for 34 types of cancer in the USA.

Methods

In this analysis, we obtained incidence data for 34 types of cancer and mortality data for 25 types of cancer for individuals aged 25–84 years for the period Jan 1, 2000, to Dec 31, 2019 from the North American Association of Central Cancer Registries and the US National Center for Health Statistics, respectively. We calculated birth cohort-specific incidence rate ratios (IRRs) and mortality rate ratios (MRRs), adjusted for age and period effects, by nominal birth cohort, separated by 5 year intervals, from 1920 to 1990.

Findings

We extracted data for 23 654 000 patients diagnosed with 34 types of cancer and 7 348 137 deaths from 25 cancers for the period Jan 1, 2000, to Dec 31, 2019. We found that IRRs increased with each successive birth cohort born since approximately 1920 for eight of 34 cancers (pcohort<0·050). Notably, the incidence rate was approximately two-to-three times higher in the 1990 birth cohort than in the 1955 birth cohort for small intestine (IRR 3·56 [95% CI 2·96–4·27]), kidney and renal pelvis (2·92 [2·50–3·42]), and pancreatic (2·61 [2·22–3·07]) cancers in both male and female individuals; and for liver and intrahepatic bile duct cancer in female individuals (2·05 [1·23–3·44]). Additionally, the IRRs increased in younger cohorts, after a decline in older birth cohorts, for nine of the remaining cancers (pcohort<0·050): oestrogen-receptor-positive breast cancer, uterine corpus cancer, colorectal cancer, non-cardia gastric cancer, gallbladder and other biliary cancer, ovarian cancer, testicular cancer, anal cancer in male individuals, and Kaposi sarcoma in male individuals. Across cancer types, the incidence rate in the 1990 birth cohort ranged from 12% (IRR1990 vs 1975 1·12 [95% CI 1·03–1·21] for ovarian cancer) to 169% (IRR1990 vs 1930 2·69 [2·34–3·08] for uterine corpus cancer) higher than the rate in the birth cohort with the lowest incidence rate. The MRRs increased in successively younger birth cohorts alongside IRRs for liver and intrahepatic bile duct cancer in female individuals, uterine corpus, gallbladder and other biliary, testicular, and colorectal cancers, while MRRs declined or stabilised in younger birth cohorts for most cancers types.

Interpretation

17 of 34 cancers had an increasing incidence in younger birth cohorts, including nine that previously had declining incidence in older birth cohorts. These findings add to growing evidence of increased cancer risk in younger generations, highlighting the need to identify and tackle underlying risk factors.

Funding

American Cancer Society.

Contributors

HS contributed to study conceptualisation, data curation, investigation, methods, project administration, supervision, validation, and writing of the original manuscript draft and review and editing. CJ contributed to investigation, method, data curation, formal analysis, validation, design of graphs, and reviewing and editing the manuscript. AJ contributed to study conceptualisation, investigation, supervision, and reviewing and editing the manuscript. AM, FI, MF-B, PB and RLS contributed to the investigation and reviewing and editing the manuscript. HS and CJ accessed and verified the underlying data. All authors had full access to all the data in the study, and final responsibility for the decision to submit for publication.

Data sharing

The NAACCR Incidence Data, the SEER Database, and the US Mortality Database (listed in the appendix [p 38]) are non-confidential and publicly accessible data, and can be accessed via a signed Data Use Agreement and distributed through SEER*Stat (version 8.4.2).

Declaration of interests

We declare no competing interests.

Acknowledgments

This study was funded by the Intramural Research Department of the American Cancer Society. We thank all cancer registry staff for their diligence in collecting cancer information, without which this research could not have been conducted. We thank Philip S Rosenberg from National Cancer Institute for the helpful discussion on the statistical methods used in the study.

Supplementary Material (1)

Supplementary appendix

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