Body mass index as a predictor of healthy and disease-free life expectancy between ages 50 and 75 : a multicohort study

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http://hdl.handle.net/10138/197197

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Stenholm , S , Head , J , Aalto , V , Kivimaki , M , Kawachi , I , Zins , M , Goldberg , M , Platts , L G , Zaninotto , P , Hanson , L L M , Westerlund , H & Vahtera , J 2017 , ' Body mass index as a predictor of healthy and disease-free life expectancy between ages 50 and 75 : a multicohort study ' , International Journal of Obesity , vol. 41 , no. 5 , pp. 769-775 . https://doi.org/10.1038/ijo.2017.29

Title: Body mass index as a predictor of healthy and disease-free life expectancy between ages 50 and 75 : a multicohort study
Author: Stenholm, S.; Head, J.; Aalto, V.; Kivimaki, M.; Kawachi, I.; Zins, M.; Goldberg, M.; Platts, L. G.; Zaninotto, P.; Hanson, L. L. Magnusson; Westerlund, H.; Vahtera, J.
Contributor: University of Helsinki, Clinicum
Date: 2017-05
Language: eng
Number of pages: 7
Belongs to series: International Journal of Obesity
ISSN: 0307-0565
URI: http://hdl.handle.net/10138/197197
Abstract: BACKGROUND: While many studies have shown associations between obesity and increased risk of morbidity and mortality, little comparable information is available on how body mass index (BMI) impacts health expectancy. We examined associations of BMI with healthy and chronic disease-free life expectancy in four European cohort studies. METHODS: Data were drawn from repeated waves of cohort studies in England, Finland, France and Sweden. BMI was categorized into four groups from normal weight (18.5-24.9 kg m(-2)) to obesity class II (>= 35 kg m(-2)). Health expectancy was estimated with two health indicators: sub-optimal self-rated health and having a chronic disease (cardiovascular disease, cancer, respiratory disease and diabetes). Multistate life table models were used to estimate sex-specific healthy life expectancy and chronic disease-free life expectancy from ages 50 to 75 years for each BMI category. RESULTS: The proportion of life spent in good perceived health between ages 50 and 75 progressively decreased with increasing BMI from 81% in normal weight men and women to 53% in men and women with class II obesity which corresponds to an average 7-year difference in absolute terms. The proportion of life between ages 50 and 75 years without chronic diseases decreased from 62 and 65% in normal weight men and women and to 29 and 36% in men and women with class II obesity, respectively. This corresponds to an average 9 more years without chronic diseases in normal weight men and 7 more years in normal weight women between ages 50 and 75 years compared to class II obese men and women. No consistent differences were observed between cohorts. CONCLUSIONS: Excess BMI is associated with substantially shorter healthy and chronic disease-free life expectancy, suggesting that tackling obesity would increase years lived in good health in populations.
Subject: SELF-REPORTED WEIGHT
CARDIOVASCULAR-DISEASE
COHORT PROFILE
GAZEL COHORT
OBESITY
DISABILITY
OVERWEIGHT
MORTALITY
METAANALYSIS
POPULATION
3121 General medicine, internal medicine and other clinical medicine
3142 Public health care science, environmental and occupational health
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