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Strategic Communication and Public Relations

Study Links Smoking to Increased All-Cause Mortality in Older Patients

No. 33 | 18/06/2012 | by Sel

An analysis of available medical literature suggests smoking was linked to increased mortality in older patients and that smoking cessation was associated with reduced mortality at an older age, according to a report published in the June 11 issue of Archives of Internal Medicine, a JAMA Network publication.

© dkfz.de

Smoking is a known risk factor for many chronic diseases, including cardiovascular disease and cancer, however, the epidemiological evidence mostly relies on studies conducted among middle-aged adults, according to the study background.

“We provide a thorough review and meta-analysis of studies assessing the impact of smoking on all-cause mortality in people 60 years and older, paying particular attention to the strength of the association by age, the impact of smoking cessation at older age, and factors that might specifically affect results of epidemiological studies on the impact of smoking in an older population,” Carolin Gellert and her colleagues from the German Cancer Research Center (DKFZ), Heidelberg, Germany, note in the study.

The authors identified 17 studies from seven countries (the U.S., China, Australia, Japan, England, Spain and France) that were published between 1987 and 2011. The follow-up time of the studies ranged from 3 to 50 years and the size of the study populations ranged from 863 to 877,243 participants.

In summarizing the results from the 17 studies, the authors note an 83 percent increased relative mortality for current smokers and a 34 percent increased relative mortality for former smokers compared with never smokers.

“In this review and meta-analysis on the association of smoking and all-cause mortality at older age, current and former smokers showed an approximately 2-fold and 1.3-fold risk for mortality, respectively,” the authors note. “This review and meta-analysis demonstrates that the relative risk for death notably decreases with time since smoking cessation even at older age.”

Carolin Gellert, Ben Schöttker, Hermann Brenner.
Smoking and all-cause mortality in older people - Systematic review and meta-analysis
Archives of Internal Medicine 2012; 172: 837-844.
Doi:10.1001/archinternmed.2012.1397

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 Tumour 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.

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