The Association Between BMI and Different Frailty Domains: A U-Shaped Curve?

Overview

Journal J Nutr Health Aging

Specialties Geriatrics
Nutritional Sciences

Date 2018 Jan 5

PMID 29300416

Citations 45

Authors

M L Rietman

D L van der A

S H van Oostrom

H S J Picavet

M E T Dolle

H van Steeg

W M M Verschuren

A M W Spijkerman

Affiliations

Soon will be listed here.

Abstract

Objectives: Previous studies showed a U-shaped association between BMI and (physical) frailty. We studied the association between BMI and physical, cognitive, psychological, and social frailty. Furthermore, the overlap between and prevalence of these frailty domains was examined.

Design: Cross-sectional study.

Setting: The Doetinchem Cohort Study is a longitudinal population-based study starting in 1987-1991 examining men and women aged 20-59 with follow-up examinations every 5 yrs.

Participants: For the current analyses, we used data from round 5 (2008-2012) with 4019 participants aged 41-81 yrs.

Measurements: Physical frailty was defined as having ≥ 2 of 4 frailty criteria from the Frailty Phenotype (unintentional weight loss, exhaustion, physical activity, handgrip strength). Cognitive frailty was defined as the < 10th percentile on global cognitive functioning (based on memory, speed, flexibility). Psychological frailty was defined as having 2 out of 2 criteria (depression, mental health). Social frailty was defined as having ≥ 2 of 3 criteria (loneliness, social support, social participation). BMI was divided into four classes. Analyses were adjusted for sex, age, level of education, and smoking.

Results: A U-shaped association was observed between BMI and physical frailty, a small linear association for BMI and cognitive frailty and no association between BMI and psychological and social frailty. The four frailty domains showed only a small proportion of overlap. The prevalence of physical, cognitive and social frailty increased with age, whereas psychological frailty did not.

Conclusion: We confirm that not only underweight but also obesity is associated with physical frailty. Obesity also seems to be associated with cognitive frailty. Further, frailty prevention should focus on multiple domains and target individuals at a younger age (<65yrs).

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