scholarly journals Associations of Nutritional, Lifestyle, and Metabolic Factors With Non-alcoholic Fatty Liver Disease: An Umbrella Review With More Than 380,000 Participants

2021 ◽  
Vol 8 ◽  
Author(s):  
Yang Xia ◽  
Qijun Wu ◽  
Huixu Dai ◽  
Jiale Lv ◽  
Yashu Liu ◽  
...  

Background & Aims: Nonalcoholic fatty liver disease (NAFLD) is the most common liver injury. We performed this umbrella review of meta-analyses to summarize the evidence on the associations of nutritional, lifestyle, and metabolic factors with NAFLD.Methods: We searched the PubMed, Embase, and Web of Science databases from inception until July 2, 2020, to identify meta-analyses of observational studies which explored the associations of nutritional, lifestyle, and metabolic factors with NAFLD. Evidence levels were assessed using summary effect sizes, 95% prediction intervals, between-study heterogeneity, evidence of small-study effects, and evidence of excess significance bias for each meta-analysis. (No. of PROSPERO, CRD42020200124).Results: Twenty two risk or protective factors from 10 published meta-analyses were included and studied. Three risk factors (sugar-sweetened beverage consumption, serum fetuin-A, and waist circumference) with highly suggestive levels of evidence and three risk factors (soft drink consumption, former smoking, and body mass index) with suggestive levels of evidence were identified. Only two protective factors (physical activity and serum vitamin D level [among adults in Western countries]) with suggestive levels of evidence were identified. Furthermore, other six risk factors and two protective factors with weak levels of evidence were identified.Conclusions: We found varying levels of evidence of associations of nutritional, lifestyle, and metabolic factors and NAFLD. The results suggest that nutritional and lifestyle management should be considered as a major primary preventive strategy for NAFLD. Moreover, considering the low quality of included meta-analyses and limited area of research topics, future high-quality original studies and meta-analyses should be performed to study these associations.

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Goh Eun Chung ◽  
Jeong Yoon Yim ◽  
Donghee Kim ◽  
Seon Hee Lim ◽  
Jong In Yang ◽  
...  

Background/Aims. Women after menopause have increased insulin resistance and visceral fat, which may increase the prevalence of nonalcoholic fatty liver disease (NAFLD). However, the pathogenesis of NAFLD in women has not been clearly defined. In this study, we aimed to determine the risk factors for NAFLD in women.Methods. A retrospective cohort study was conducted. Women who underwent abdominal ultrasonography and blood sampling for routine health check-ups were recruited.Results. Among 1,423 subjects, 695 women (48.9%) were in a menopausal state. The prevalence of NAFLD was higher in postmenopausal women than in premenopausal women (27.2% versus 14.4%,P<0.001). In premenopausal women, low HDL-cholesterol, central obesity, and homeostasis model assessment-estimated insulin resistance showed a significant association with the increased risk of NAFLD in multivariate analysis. In postmenopausal women, the presence of diabetes, triglyceridemia, and central obesity showed a significant association with the risk of NAFLD. The presence of menopause and hormone replacement therapy in postmenopausal women were not risk factors for NAFLD.Conclusions. Our findings showed different metabolic factors for NAFLD in pre- and postmenopausal women. However, the key issues are the same: central obesity and insulin resistance. These results reemphasize the importance of metabolic factors irrespective of menopausal status in the pathogenesis of NAFLD in women.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Young Bin Won ◽  
Seok Kyo Seo ◽  
Bo Hyon Yun ◽  
SiHyun Cho ◽  
Young Sik Choi ◽  
...  

AbstractTo evaluate risk factors leading to non-alcoholic fatty liver disease (NAFLD) occurrence in polycystic ovarian syndrome (PCOS) women. A retrospective cohort study of a total of 586 women diagnosed with PCOS aged 13–35 years at the gynecology department at a university hospital was done to evaluate PCOS phenotype, metabolic syndrome (MetS) diagnosis, body composition, insulin sensitivity, sex hormones, lipid profile, liver function, and transient elastography (TE). In PCOS women with NAFLD compared to those without, MetS diagnosis (Hazard ratio [HR] 5.6, 95% Confidence interval [CI] 2.2–14.4, p < 0.01) and hyperandrogenism (HA) (HR 4.4, 95% CI 1.4–13.4, p = 0.01) were risk factors significantly associated with subsequent NAFLD occurrence, whereas 2-h insulin level in 75 g glucose tolerance test (GTT) (HR 1.2, 95% CI 0.5–2.5, p = 0.70) and body mass index (BMI) > 25 kg/m2 (HR 2.2, 95% CI 0.6–8.0, p = 0.24) was not. Among NAFLD patients who underwent TE, a higher number of MetS components indicated a worse degree of fibrosis and steatosis. MetS diagnosis and HA at PCOS diagnosis were risk factors associated with NAFLD, while 2-h insulin level in 75 g GTT and obesity were not. Although elevated aspartate aminotransferase levels were significant for NAFLD risk, liver enzyme elevations may not be present until late liver damage. Further prospective studies of PCOS women with MetS or HA are warranted to determine whether patients without liver enzyme elevations should undergo preemptive liver examinations.


2021 ◽  
pp. flgastro-2020-101480
Author(s):  
Laura Jane Neilson ◽  
Louise Macdougall ◽  
Phey Shen Lee ◽  
Timothy Hardy ◽  
David Beaton ◽  
...  

BackgroundNon-alcoholic fatty liver disease (NAFLD) is common and is associated with liver-related and cardiovascular-related morbidity. Our aims were: (1) to review the current management of patients with NAFLD attending hospital clinics in North East England (NEE) and assess the variability in care; (2) develop a NAFLD ‘care bundle’ to standardise care; (3) to assess the impact of implementation of the NAFLD care bundle.MethodsA retrospective review was conducted to determine baseline management of patients with NAFLD attending seven hospitals in NEE. A care bundle for the management of NAFLD was developed including important recommendations from international guidelines. Impact of implementation of the bundle was evaluated prospectively in a single centre.ResultsBaseline management was assessed in 147 patients attending gastroenterology, hepatology and a specialist NAFLD clinic. Overall, there was significant variability in the lifestyle advice given and management of metabolic risk factors, with patients attending an NAFLD clinic significantly more likely to achieve >10% body weight loss and have metabolic risk factors addressed. Following introduction of the NAFLD bundle 50 patients were evaluated. Use of the bundle was associated with significantly better documentation and implementation of most aspects of patient management including management of metabolic risk factors, documented lifestyle advice and provision of NAFLD-specific patient advice booklets.ConclusionThe introduction of an outpatient ‘care bundle’ led to significant improvements in the assessment and management of patients with NAFLD in the NEE and could help improve and standardise care if used more widely.


2021 ◽  
Vol 10 (11) ◽  
pp. 2415
Author(s):  
Yasaman Vali ◽  
Jenny Lee ◽  
Jérôme Boursier ◽  
René Spijker ◽  
Joanne Verheij ◽  
...  

(1) Background: FibroTest™ is a multi-marker panel, suggested by guidelines as one of the surrogate markers with acceptable performance for detecting fibrosis in patients with non-alcoholic fatty liver disease (NAFLD). A number of studies evaluating this test have been published after publication of the guidelines. This study aims to produce summary estimates of FibroTest™ diagnostic accuracy. (2) Methods: Five databases were searched for studies that evaluated FibroTest™ against liver biopsy as the reference standard in NAFLD patients. Two authors independently screened the references, extracted data, and assessed the quality of included studies. Meta-analyses of the accuracy in detecting different levels of fibrosis were performed using the bivariate random-effects model and the linear mixed-effects multiple thresholds model. (3) Results: From ten included studies, seven were eligible for inclusion in our meta-analysis. Five studies were included in the meta-analysis of FibroTest™ in detecting advanced fibrosis and five in significant fibrosis, resulting in an AUC of 0.77 for both target conditions. The meta-analysis of three studies resulted in an AUC of 0.69 in detecting any fibrosis, while analysis of three other studies showed higher accuracy in cirrhosis (AUC: 0.92). (4) Conclusions: Our meta-analysis showed acceptable performance (AUC > 0.80) of FibroTest™ only in detecting cirrhosis. We observed more limited performance of the test in detecting significant and advanced fibrosis in NAFLD patients. Further primary studies with high methodological quality are required to validate the reliability of the test for detecting different fibrosis levels and to compare the performance of the test in different settings.


2018 ◽  
Vol 8 ◽  
pp. S39-S40
Author(s):  
Shivaram Prasad Singh ◽  
Saroj Kanta Sahu ◽  
Prasanta Kumar Parida ◽  
Sambit Kumar Behera ◽  
Suryakanta Parida ◽  
...  

Circulation ◽  
2013 ◽  
Vol 127 (suppl_12) ◽  
Author(s):  
Lisa B VanWagner ◽  
Christina M Shay ◽  
Hongyan Ning ◽  
John Wilkins ◽  
Cora E Lewis ◽  
...  

Background: Nonalcoholic Fatty Liver Disease (NAFLD) and excess visceral adipose tissue (VAT) are associated with cardiovascular disease (CVD). Recent studies suggest that NAFLD and coronary artery calcification (CAC) are related independent of VAT. In a population-based cross-sectional sample of black and white adults free from prevalent liver or heart disease, we tested the hypothesis that NAFLD is associated with the presence of CAC and abdominal aortoiliac calcification (AAC) independent of VAT and other CVD risk factors. Methods: Participants from the Coronary Artery Risk Development in Young Adults study (Y25 exam) with concurrent computed tomography quantification of liver fat, CAC and AAC were included (n=2,163). NAFLD was defined as liver attenuation ≤ 40 Hounsfield Units after exclusion of other causes of liver fat (medication/alcohol use). Using the Agatston method, CAC/AAC presence was defined as a score > 0. Logistic regression models were used to calculate odds ratios and 95% confidence intervals. Results: Participant age was 49.9 (3.7) years and the sample was equally distributed by sex (55.6% female) and race (50.1% black). Mean BMI was 30.6 (7.1). The CAC and AAC prevalence was 26.5% and 49.6%. NAFLD prevalence was 9.6%. NAFLD participants were 50.1 (3.7) years old and more likely to be male (59.8% vs. 51.7%, p<0.0001), white (56.5% vs. 49.3%, p<0.05) and have the metabolic syndrome (70.1% vs. 22.6%, p<0.0001) than those with no NAFLD. They were also more likely to have CAC (37.2%) and AAC (60.9%) than those with no NAFLD (25.4% and 49.4%, respectively). In multivariable analyses adjusted for demographics and health behaviors, NAFLD was associated with the presence of CAC and AAC (Table 1). This association was attenuated after adjustment for CVD risk factors and VAT. Effect modification by race and sex was not statistically significant. Conclusion: In contrast to prior studies, our results suggest that the relationship between NAFLD and subclinical CVD is mediated by the presence of other CVD risk factors.


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