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Dietary iodine, seaweed consumption, and incidence risk of metabolic syndrome among postmenopausal women: a prospective analysis of the Korean Multi-Rural Communities Cohort Study (MRCohort)

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Affiliated Author(s)
신동훈
Alternative Author(s)
Shin, Dong Hoon
Journal Title
European journal of nutrition
ISSN
1436-6215
Issued Date
2021
Keyword
Iodine intakeSeaweedMetabolic syndromeProspectivePostmenopausal women
Abstract
Purpose:
Despite a beneficial role of iodine and seaweed consumption against metabolic syndrome (MetS), which is high in postmenopausal women, few studies investigated such associations in a prospective study. This study aimed to investigate the association of dietary iodine and seaweed consumption with the incidence of MetS and its components in postmenopausal women.

Methods:
A total of 2588 postmenopausal women aged ≥ 40 years were recruited between 2005 and 2011 in the Multi-Rural Communities Cohort (MRCohort). A validated semiquantitative food frequency questionnaire was used to collect dietary intake data. MetS was defined as three of five components [abdominal obesity, elevated blood pressure, glucose, triglyceride, and low-high density lipoprotein cholesterol (HDL-C)] and the incidence of MetS was checked every 2–4 years. The incidence rate ratio (IRR) was estimated using a modified Poisson regression model with a robust error estimator.

Results:
During the mean follow-up period (3.4 ± 2.1 years), MetS occurred in 481 participants. The median cumulative average iodine intake was 108.9 µg/day (interquartile range, 60.8–190.2 µg/day). In multivariable analyses, average iodine and seaweed consumption were inversely associated with MetS (IRR = 0.61, 95% CI 0.47–0.78 in the highest quartile of iodine intake, P for trend = 0.0018; IRR = 0.52, 95% CI 0.39–0.69 in the highest quartile of seaweed consumption, P for trend = 0.0004). Among MetS components, blood glucose (> 100 mg/dL), blood pressure (≥ 130/85 mmHg), and lipid profiles (triglyceride, ≥ 150 mg/dL and HDL-C, < 50 mg/dL) were significantly inversely associated with dietary iodine and seaweed consumption, but there was no clear association for waist circumference (≥ 85 cm).

Conclusion:
Dietary iodine and seaweed consumption may be inversely associated with MetS incidence and its individual abnormalities in postmenopausal women.
Department
Dept. of Preventive Medicine (예방의학)
Publisher
School of Medicine (의과대학)
Citation
Jin-Kyu Park. (2021). Dietary iodine, seaweed consumption, and incidence risk of metabolic syndrome among postmenopausal women: a prospective analysis of the Korean Multi-Rural Communities Cohort Study (MRCohort). European journal of nutrition, 60(1), 135-146. doi: 10.1007/s00394-020-02225-0
Type
Article
DOI
10.1007/s00394-020-02225-0
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/43070
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학)
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