Food and Behaviour Research

Donate Log In

Association Between Waist Circumference and Dementia in Older Persons: A Nationwide Population‐Based Study

Cho GJ, Hwang SY, Lee KM, Choi KM, Hyun Baik S, Kim T, Han SW, Yoo HJ (2019) Obesity (Silver Spring).  2019 Nov;27(11): 1883-1891. doi: 10.1002/oby.22609. 

Web URL: Read this and related abstracts on PubMed here



This study examined whether a positive association exists between waist circumference (WC) and dementia among older persons.


The study population comprised 872,082 participants aged 65 years and older who participated in a Korean national health screening examination between January 1, 2009, and December 31, 2009. Adjusted hazard ratios and 95% CIs for dementia during follow-up from 2009 to 2015 were calculated according to baseline BMI and WC categories.


After a multivariate adjustment that included BMI, the hazard ratios for dementia showed a stepwise increase according to the increase in WC categories by 5 cm from 85 to 90 cm in men and from 80 to 85 cm in women until ≥ 110 cm (from 1.06 [95% CI: 1.03-1.09] to 1.64 [95% CI: 1.37-1.94] in men and from 1.04 [95% CI: 1.02-1.07] to 1.58 [95% CI: 1.36-1.84] in women). The influence of the current WC category for abdominal obesity on the risk of dementia was different according to BMI; especially, the normal weight men and women with abdominal obesity had a prominent increased risk of dementia compared with those without abdominal obesity.


Abdominal obesity, as measured by WC, was associated with significantly increased risk of dementia after adjustment for general obesity.


Read the associated news article: