Cookie Settings

We use cookies to optimize our website. These include cookies that are necessary for the operation of the site, as well as those that are only used for anonymous statistic. You can decide for yourself which categories you want to allow. Further information can be found in our data privacy protection .

Essential

These cookies are necessary to run the core functionalities of this website and cannot be disabled.

Name Webedition CMS
Purpose This cookie is required by the CMS (Content Management System) Webedition for the system to function correctly. Typically, this cookie is deleted when the browser is closed.
Name econda
Purpose Session cookie emos_jcsid for the web analysis software econda. This runs in the “anonymized measurement” mode. There is no personal reference. As soon as the user leaves the site, tracking is ended and all data in the browser are automatically deleted.
Statistics

These cookies help us understand how visitors interact with our website by collecting and analyzing information anonymously. Depending on the tool, one or more cookies are set by the provider.

Name econda
Purpose Statistics
External media

Content from external media platforms is blocked by default. If cookies from external media are accepted, access to this content no longer requires manual consent.

Name YouTube
Purpose Show YouTube content
Name Twitter
Purpose activate Twitter Feeds

Obesity at a young age - a risk factor for early colorectal cancer

No. 02 | 11/01/2022 | by Koh

The incidence of colorectal cancers in young adults is increasing. At the same time, the proportion of overweight and obese young people is also on the rise. Whether there is a connection between these two observations, however, was not known until now. Scientists at the German Cancer Research Center (DKFZ) have now shown that the risk of early colorectal cancer is significantly increased in overweight young people compared to normal-weight peers.

© Fotolia

Colorectal cancer is one of the most common cancers, with approximately 60,000 people diagnosed in Germany each year. Most of those affected are people over the age of 50. However, in many countries the number of colorectal cancers in younger adults has been increasing in recent years.

It has been known for some time that there is a link between a high body mass index (BMI) and the risk of colorectal cancer. The influence of age has not yet been investigated. However, since overweight and obesity are increasing in frequency, especially in the younger generation, it is reasonable to assume that this development could be one of the main causes for the more frequent occurrence of colorectal cancer already at a younger age.

To test whether this assumption is correct, scientists led by Hermann Brenner of the German Cancer Research Center (DKFZ) have now conducted comprehensive statistical analyses. "With a view to preventing colorectal cancer, it is important to have a precise knowledge of the risk factors for early disease," explains Brenner, an epidemiologist. "Since colorectal cancer is rare in young adults, despite rising incidences, analyses on large patient cohorts are needed to show an association."

The researchers therefore drew on data from the ongoing DACHS (colorectal cancer: opportunities for prevention through screening) case-control study, one of the world's largest trials of colorectal cancer, which they have been conducting at the German Cancer Research Center since 2003. Between 2003 and 2020, a total of 6,602 patients with colorectal cancer and 7,950 people without colorectal cancer participated in this study. There were 747 people younger than 55 in the affected group and 621 in the control group. The researchers asked the participants about their weight at the ages of 20 and 30 and about 10 years before the cancer diagnosis and before the survey, respectively. From the data, they determined the risk of early colorectal cancer in overweight (BMI 25 to <30 kg/m2) and obese (BMI ≥30 kg/m2, obesity) people compared with normal-weight (BMI <25 kg/m2) people.

The team found that the risk of early colorectal cancer was about twice as high in obese people as in those of normal weight. If obesity was already present at age 20, their risk was even 2.6 times higher. Overweight people with a BMI of 25 to 30 kg/m2 also had an increased risk of developing colorectal cancer at an early age.

These findings support the suggestion that the increase in overweight and obesity in the younger generation is one of the main reasons for the more frequent occurrence of early colorectal cancer. "The results suggest that measures to prevent overweight and obesity, particularly in younger generations, are just as important for colorectal cancer prevention as they are for preventing other common diseases," Brenner concludes.

Hengjing Li, Daniel Boakye, Xuechen Chen, Lina Jansen, Jenny Chang-Claude, Michael Hoffmeister, Hermann Brenner. Associations of body mass index at different ages with early-onset colorectal cancer.
Gastroenterology 2021; DOI: https://doi.org/10.1053/j.gastro.2021.12.239

The German Cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ) with its more than 3,000 employees is the largest biomedical research institution in Germany. More than 1,300 scientists at the DKFZ investigate how cancer develops, identify cancer risk factors and search for new strategies to prevent people from developing cancer. They are developing new methods to diagnose tumors more precisely and treat cancer patients more successfully. The DKFZ's Cancer Information Service (KID) provides patients, interested citizens and experts with individual answers to all questions on cancer.

Jointly with partners from the university hospitals, the DKFZ operates the National Center for Tumor Diseases (NCT) in Heidelberg and Dresden, and the Hopp Children's Cancer Center KiTZ in Heidelberg. In the German Consortium for Translational Cancer Research (DKTK), one of the six German Centers for Health Research, the DKFZ maintains translational centers at seven university partner locations. NCT and DKTK sites combine excellent university medicine with the high-profile research of the DKFZ. They contribute to the endeavor of transferring promising approaches from cancer research to the clinic and thus improving the chances of cancer patients.

The DKFZ is 90 percent financed by the Federal Ministry of Education and Research and 10 percent by the state of Baden-Württemberg. The DKFZ is a member of the Helmholtz Association of German Research Centers.

RSS-Feed

Subscribe to our RSS-Feed.

to top
powered by webEdition CMS