Header

UZH-Logo

Maintenance Infos

BMI-mortality association: shape independent of smoking status but different for chronic lung disease and lung cancer


Faeh, David; Kaufmann, Marco; Haile, Sarah R; Bopp, Matthias (2018). BMI-mortality association: shape independent of smoking status but different for chronic lung disease and lung cancer. International Journal of COPD, 13:1851-1855.

Abstract

Background Besides smoking, low or high body mass index (BMI) is associated with chronic lung disease (CLD). It is unclear how CLD is associated with BMI, whether smoking interacts with this association, and how the associations differ from the patterns known for lung cancer. Population and Methods Our population comprised 35,212 individuals aged 14-99, who participated in population-based surveys conducted in 1977-1993 in Switzerland (mortality follow-up until 2014). We categorized smokers into never, former, light, and heavy; and BMI into underweight, normal weight, overweight, and obese. Hazard ratios (HRs) were obtained with multivariable Cox proportional hazards models. Results CLD mortality was strongly associated with being underweight. This was mainly due to the effect in men (HR 5.04 [2.63-9.66]) and also prevailed in never smokers (HR 1.81 [1.11-3.00]). Obesity was also associated with CLD mortality (HR men: 1.37 [1.01-1.86], women: 1.39 [0.90-2.17]), but not with lung cancer mortality. In line with lung cancer, for CLD, the BMI-mortality association followed the same shape in all smoking categories, suggesting that this association was largely independent of smoking status. Conclusion The shape of the BMI-mortality association was inversely linear for lung cancer but followed a U-shape for CLD. Further research should examine the potentially protective effect of obesity on lung cancer occurrence and the possibly hazardous impact of underweight on CLD development.

Abstract

Background Besides smoking, low or high body mass index (BMI) is associated with chronic lung disease (CLD). It is unclear how CLD is associated with BMI, whether smoking interacts with this association, and how the associations differ from the patterns known for lung cancer. Population and Methods Our population comprised 35,212 individuals aged 14-99, who participated in population-based surveys conducted in 1977-1993 in Switzerland (mortality follow-up until 2014). We categorized smokers into never, former, light, and heavy; and BMI into underweight, normal weight, overweight, and obese. Hazard ratios (HRs) were obtained with multivariable Cox proportional hazards models. Results CLD mortality was strongly associated with being underweight. This was mainly due to the effect in men (HR 5.04 [2.63-9.66]) and also prevailed in never smokers (HR 1.81 [1.11-3.00]). Obesity was also associated with CLD mortality (HR men: 1.37 [1.01-1.86], women: 1.39 [0.90-2.17]), but not with lung cancer mortality. In line with lung cancer, for CLD, the BMI-mortality association followed the same shape in all smoking categories, suggesting that this association was largely independent of smoking status. Conclusion The shape of the BMI-mortality association was inversely linear for lung cancer but followed a U-shape for CLD. Further research should examine the potentially protective effect of obesity on lung cancer occurrence and the possibly hazardous impact of underweight on CLD development.

Statistics

Citations

Dimensions.ai Metrics
4 citations in Web of Science®
3 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

90 downloads since deposited on 27 Jun 2018
56 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Epidemiology, Biostatistics and Prevention Institute (EBPI)
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2018
Deposited On:27 Jun 2018 12:08
Last Modified:24 Sep 2019 23:31
Publisher:Dove Medical Press Ltd.
ISSN:1176-9106
OA Status:Gold
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.2147/COPD.S157629
Official URL:https://www.dovepress.com/bmi-mortality-association-shape-independent-of-smoking-status-but-diff-peer-reviewed-article-COPD
PubMed ID:29922051

Download

Gold Open Access

Download PDF  'BMI-mortality association: shape independent of smoking status but different for chronic lung disease and lung cancer'.
Preview
Content: Published Version
Filetype: PDF
Size: 634kB
View at publisher
Licence: Creative Commons: Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)