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Prevalence and clinical characteristics of metabolically unhealthy obesity in an Iranian adult population

Authors Rahmanian K, Shojaei M, Sotoodeh Jahromi A

Received 7 December 2018

Accepted for publication 24 July 2019

Published 13 August 2019 Volume 2019:12 Pages 1387—1395

DOI https://doi.org/10.2147/DMSO.S197476

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Cristina Weinberg

Peer reviewer comments 2

Editor who approved publication: Dr Juei-Tang Cheng


Karamatollah Rahmanian,1 Mohammad Shojaei,2 Abdolreza Sotoodeh Jahromi2

1Research Center for Social Determinants of Health, Community Medicine Department, Faculty of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran; 2Research Center for Non-communicable Diseases, Internal Diseases Department, Faculty of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran

Purpose: The incidence of obesity is globally increasing and it is a predisposing factor for morbidity and mortality. This study assessed the prevalence of metabolically unhealthy (MU) individuals and its determinants according to body mass index (BMI).
Materials and method: In our cross-sectional study, 891 persons aged 30 years or older participated. Participants were classified as obese (BMI ≥30 kg/m2), overweight (BMI 25–<30 kg/m2 and normal weight (BMI <25 kg/m2). Metabolic health status was defined using four existing cardio-metabolic abnormalities (elevated blood pressure, elevated serum concentrations of triglyceride and fasting glucose and a low serum concentration of high density lipoprotein cholesterol). Then, two phenotypes were defined: healthy (existence of 0–1 cardio-metabolic abnormalities) and unhealthy (presence of 2 or more cardio-metabolic abnormalities).
Result: Overall, 10.9% (95% confidence interval (CI): 8.8–13.0) and 7.2% (95% CI: 5.5–8.9) of participants were MU obese and metabolically healthy obese, respectively. The prevalence of MU was higher in overweight (55.6%; 95% CI: 50.6–60.6, p<0.001) and obese (60.2%; 95% CI: 52.8–67.6, p=0.001) subjects than in individuals with a normal weight (37.5%; 95% CI: 29.4–42.6). Multiple logistic regression analysis showed an association of a MU state with age and dyslipidaemia in the BMI subgroups and with female sex in the normal weight individuals.
Conclusion: The prevalence of a MU state increased with increasing BMI. Ageing and dyslipidaemia were associated with an unhealthy metabolic state in normal weight, overweight and obese subjects and with the female sex in normal weight subjects.

Keywords: metabolically healthy, metabolically unhealthy, obesity, overweight, prevalence, Iran

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