Global epidemiology of lean non-alcoholic fatty liver disease: A systematic review and meta-analysis.
J Gastroenterol Hepatol
; 35(12): 2041-2050, 2020 Dec.
Article
em En
| MEDLINE
| ID: mdl-32573017
ABSTRACT
BACKGROUND AND AIM:
Lean non-alcoholic fatty liver disease (NAFLD) is a potentially metabolically unhealthy state that refers to NAFLD occurring in non-overweight/nonobese subjects. Yet its global epidemiology and metabolic characteristics are not extensively elucidated.METHODS:
PubMed, EMBASE, Web of Science and Cochrane databases were searched for eligible studies until January 2020. Random-effects/fixed-effects models were used to estimate the global prevalence of lean NAFLD and to compare clinical characteristics among lean non-NAFLD, lean NAFLD, and overweight/obese NAFLD subjects. "Lean" NAFLD was defined by ethnic-specific body mass index measurements in the normal range. Meta-regression and subgroup analyses were performed to determine potential sources of heterogeneity.RESULTS:
A total of 33 observational studies were included with 205 307 individuals from 14 countries. The global prevalence of lean NAFLD was 4.1% (95% confidence interval [CI] 3.4-4.8%). In lean subjects, the prevalence of NAFLD was 9.7% (95% CI 7.7-11.8%). The prevalence of lean NAFLD with diabetes, hypertension, metabolic syndrome, dyslipidemia, or central obesity was 0.6% (95% CI 0.4-0.9%), 1.8% (95% CI 1.2-2.5%), 1.4% (95% CI 1.0-1.9%), 2.8% (95% CI 1.9-3.7%), and 2.0% (95% CI 1.6-2.4%), respectively. The prevalence of lean NAFLD showed an upward trend between 1988 and 2017. Asian individuals had the highest prevalence of lean NAFLD (4.8%, 95% CI 4.0-5.6%). Middle-aged people (45-59 years old) had the highest prevalence of lean NAFLD (4.4%, 95% CI 3.2-5.5%). The prevalence of metabolic complications in lean non-NAFLD, lean NAFLD, and overweight/obese NAFLD groups increased sequentially.CONCLUSIONS:
Lean NAFLD occurs with metabolic complications and is not an uncommon condition. The highest prevalence of lean NAFLD occurs in middle-aged individuals of Asian countries.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Magreza
/
Saúde Global
/
Hepatopatia Gordurosa não Alcoólica
País/Região como assunto:
Asia
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China