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Nonalcoholic fatty liver disease is associated with cognitive function in adults

Authors
 Sang Won Seo  ;  Rebecca F. Gottesman  ;  Jeanne M. Clark  ;  Ruben Hernaez  ;  Yoosoo Chang  ;  Changsoo Kim  ;  Kyoung Hwa Ha  ;  Eliseo Guallar  ;  Mariana Lazo 
Citation
 NEUROLOGY, Vol.86(12) : 1136-1142, 2016 
Journal Title
 NEUROLOGY 
ISSN
 0028-3878 
Issue Date
2016
MeSH
Adult ; Cognition*/physiology ; Cognition Disorders/diagnosis* ; Cognition Disorders/epidemiology ; Cognition Disorders/psychology* ; Cross-Sectional Studies ; Female ; Humans ; Male ; Middle Aged ; Non-alcoholic Fatty Liver Disease/diagnosis* ; Non-alcoholic Fatty Liver Disease/epidemiology ; Non-alcoholic Fatty Liver Disease/psychology* ; Nutrition Surveys/trends ; Psychomotor Performance/physiology ; Risk Factors ; Young Adult
Abstract
OBJECTIVE: We hypothesized that nonalcoholic fatty liver disease (NAFLD) is independently associated with cognitive impairment in a representative sample of the general US population regardless of the presence of cardiovascular disease (CVD) or its risk factors. METHODS: This was a cross-sectional study of 4,472 adults aged 20-59 years who participated in the Third National Health and Nutritional Examination Survey. The participants underwent assessment of liver enzyme activity and hepatic steatosis by ultrasound, and underwent cognitive evaluation using the following computer-administered tests: the Simple Reaction Time Test (SRTT), the Symbol-Digit Substitution Test (SDST), and the Serial Digit Learning Test (SDLT). We defined NAFLD as moderate/severe steatosis as determined by ultrasound in the absence of hepatitis B or C or excessive alcohol consumption. We used multiple linear regression models to examine the association between NAFLD and cognitive function while controlling for potential confounders. RESULTS: Participants with NAFLD showed lower overall performance on the SDLT (β = 0.726, 95% confidence interval [CI] 0.105-1.347), while associations with SRTT and SDST did not reach significance. Increased activity of the liver enzymes alanine aminotransferase (β = 0.018, 95% CI 0.006-0.030) and aspartate aminotransferase (β = 0.021, 95% CI 0.005-0.037) correlated with lower performance on the SDLT, while increased alanine aminotransferase was also correlated with lower performance in the SDST (β = 0.002, 95% CI 0.0001-0.004). CONCLUSIONS: NAFLD was independently associated with lower cognitive performance independent of CVD and its risk factors. Given the scarcity of risk factors associated with age-related cognitive decline, these findings may have significant implications.
Full Text
http://www.neurology.org/content/86/12/1136
DOI
10.1212/WNL.0000000000002498
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/146658
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