Dietary Pattern, Diet Quality, and Dementia: A Systematic Review and Meta-Analysis of Prospective Cohort Studies

2020 ◽  
Vol 78 (1) ◽  
pp. 151-168 ◽  
Author(s):  
Yi-Hsuan Liu ◽  
Xiang Gao ◽  
Muzi Na ◽  
Penny M. Kris-Etherton ◽  
Diane C. Mitchell ◽  
...  
Keyword(s):  
Systematic Review ◽  
Risk Ratio ◽  
Diet Quality ◽  
Dietary Pattern ◽  
Lower Risk ◽  
Meta Analysis ◽  
A Priori ◽  
Research Articles ◽  
Lifestyle Factor ◽  
Healthy Dietary Pattern

Background: Diet is an important lifestyle factor that may prevent or slow the onset and progression of neurodegeneration. Some, but not all, recent studies have suggested that adherence to a healthy dietary pattern may be associated with reduced risk of dementia. Objective: In this meta-analysis, we systematically examined the associations between overall dietary patterns, assessed a priori and a posteriori, and risk of dementia. Methods: We systematically searched PubMed, Web of Science, and the Cumulative Index for Nursing and Allied Health databases from January 1, 1981 to September 11, 2019. Prospective studies published in English were included. Random-effects model was used to calculate the pooled risk ratios and 95% confidence intervals (CIs). Results: Sixteen research articles were identified in the systematic review and 12 research articles including 66,930 participants were further included for the meta-analysis. Adherence to high diet quality or a healthy dietary pattern was significantly associated with lower risk of overall dementia (pooled risk ratio = 0.82; 95% CI: 0.70, 0.95; n = 12) and Alzheimer’s disease (pooled risk ratio = 0.61; 95% CI: 0.47, 0.79; n = 6) relative to those with low diet quality or an unhealthy dietary pattern. Subgroup analyses stratified by age, sex, follow-up duration, diet quality assessment approach, study location, and study quality generated similar results. Conclusion: Adherence to a healthy dietary pattern was associated with lower risk of overall dementia. Further randomized controlled trials are needed to provide additional evidence about the role of a healthy diet on the development and progression of dementia.

scholarly journals Dietary Pattern Score, Diet Quality, and Major Neurodegenerative Diseases: A Meta-analysis of Observational Cohort Studies (OR33-07-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Yi-Hsuan Liu ◽  
Xiang Gao ◽  
Muzi Na ◽  
Penny Kris-Etherton ◽  
Diane Mitchell ◽  
...  
Keyword(s):  
Cohort Studies ◽  
Neurodegenerative Diseases ◽  
Diet Quality ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Meta Analysis ◽  
A Priori ◽  
A Posteriori ◽  
Observational Cohort ◽  
Healthy Dietary Pattern

Abstract Objectives Diet is an important lifestyle factor that may prevent or slow the onset and progression of neurodegeneration. Recent studies suggest that adherence to a healthy dietary pattern is associated with reduced risk of cognitive decline. Few studies have examined the relationships between dietary patterns and risk of clinical neurodegenerative disease outcomes. In this meta-analysis, we examined the associations between overall dietary patterns, assessed a priori and a posteriori, and risk of major neurodegenerative disease including dementia, Alzheimer's disease, and Parkinson's disease. Methods We systematically searched in the PubMed, Web of Science, and Cumulative Index for Nursing and Allied Health databases starting from 1981 to October 10, 2018. Observational cohort studies published in English with prospective and case-control designs were included. Diet assessment approaches (a priori or a posteriori) were utilized to assist in determining whether the exposure was dietary pattern score or diet quality. Generic inverse variance method was used to calculate the pooled risk ratios and 95% confidence intervals (CIs) among the highest versus the lowest diet quality/dietary pattern score groups in random effect models. Results Seventeen studies with 173,283 participants were identified. Various diet quality indexes or dietary pattern scores, such as the Healthy Eating Index, the Mediterranean diet score, and dietary pattern scores generated by principal component analysis or reduced rank regression, were used among studies. Our meta-analysis of cohorts showed significant associations between adherence to high diet quality or healthy dietary pattern and lower risk of dementia (pooled risk ratio = 0.70; 95% CI: 0.56-0.86) and Parkinson's disease (pooled risk ratio = 0.72; 95% CI: 0.54-0.97) relative to those with low diet quality or unhealthy dietary pattern. Conclusions Adherence to high diet quality or healthy dietary pattern may provide protective effects on risk of neurodegenerative diseases. Additional observational studies and randomized controlled trials are needed to address our study limitations and provide further evidence about the role of a poor diet on the development and progression of neurodegenerative diseases as well as the benefits of a healthy diet on the prevention of major neurodegenerative diseases. Funding Sources United States Department of Agriculture, Agricultural Research Service agreement. Supporting Tables, Images and/or Graphs

scholarly journals Dietary patterns and chronic kidney disease risk: a systematic review and updated meta-analysis of observational studies

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Ling-Qiong He ◽  
Xu-Hong Wu ◽  
Yi-Qian Huang ◽  
Xiao-Yan Zhang ◽  
Long Shu
Keyword(s):  
Systematic Review ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Lower Risk ◽  
Observational Studies ◽  
Meta Analysis ◽  
Drinking Pattern ◽  
Healthy Dietary Pattern

Abstract Background A number of studies have reported the association between dietary patterns and the risk of chronic kidney disease (CKD), however a consistent perspective hasn’t been established to date. Herein, we conducted this systematic review and meta-analysis of observational studies to assess the association between dietary patterns and CKD. Methods MEDLINE, EBSCO and references from eligible studies were searched for relevant articles published up to 9 May 2020 that examined the association of common dietary patterns and CKD. The heterogeneity among studies was assessed by Cochran’s Q test and I2 methods. Results Seventeen eligible studies, involving 149,958 participants, were included in our systematic review and meta-analysis. The highest compared with the lowest category of healthy dietary pattern was significantly associated with a lower risk of CKD (OR=0.69; CI: 0.57, 0.84; P=0.0001). A higher risk of CKD was shown for the highest compared with the lowest categories of Western-type dietary pattern (OR=1.86; CI: 1.21, 2.86; P=0.005). There were evidence of a lower risk of CKD in the highest compared with the lowest categories of light-moderate drinking pattern (OR=0.76; CI: 0.71, 0.81; P< 0.0001) and heavy drinking pattern (OR=0.67; CI: 0.56, 0.80; P< 0.0001). Conclusions The results of this systematic review and meta-analysis show that a healthy dietary pattern and alcohol drinking were associated with lower risk of CKD, whereas a Western-type dietary pattern was associated with higher risk of CKD.

scholarly journals A Healthy Dietary Pattern Reduces Lung Cancer Risk: A Systematic Review and Meta-Analysis

Nutrients ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 134 ◽  
Author(s):  
Yanlai Sun ◽  
Zhenxiang Li ◽  
Jianning Li ◽  
Zengjun Li ◽  
Jianjun Han
Keyword(s):  
Lung Cancer ◽  
Systematic Review ◽  
Cancer Risk ◽  
Dietary Pattern ◽  
Lung Cancer Risk ◽  
Meta Analysis ◽  
Healthy Dietary Pattern

scholarly journals Dietary Patterns, Bone Mineral Density, and Risk of Fractures: A Systematic Review and Meta-Analysis

Nutrients ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1922 ◽  
Author(s):  
Edgar Denova-Gutiérrez ◽  
Lucía Méndez-Sánchez ◽  
Paloma Muñoz-Aguirre ◽  
Katherine Tucker ◽  
Patricia Clark
Keyword(s):  
Bone Mineral Density ◽  
Systematic Review ◽  
Bone Mineral ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Meta Analysis ◽  
Inverse Association ◽  
Mineral Density ◽  
Risk Of Fracture ◽  
Healthy Dietary Pattern

The aim of this systematic review was to assess the evidence on the relation between dietary patterns, bone mineral density (BMD), and risk of fracture in different age groups. Medline and Embase were searched for articles that identified dietary patterns and related these to BMD or risk of fracture through May 2018. Multivariable adjusted odds ratios (ORs) and 95% confidence intervals (95%CI) comparing the lowest and highest categories of dietary pattern were combined by using a random effects meta-analysis. In total, 31 studies were selected for review, including 18 cohorts, 1 case-control, and 12 cross-sectional studies, in the meta-analysis of Prudent/healthy and Western/unhealthy dietary pattern, BMD, and risk of fracture. There was evidence of a lower risk of fracture when intakes in the highest categories were compared with the lowest categories of Prudent/healthy dietary pattern (OR = 0.81; 95%CI: 0.69, 0.95; p = 0.01). In contrast, when intakes in the highest categories were compared with the lowest categories of Western/unhealthy dietary pattern, a greater risk of fracture (OR = 1.10; 95%CI: 1.02, 1.19; p = 0.01) was observed among men. The present systematic review and meta-analysis provides evidence of an inverse association between a Prudent/healthy dietary pattern and risk of low BMD and a positive relation between Western/unhealthy dietary pattern and risk of low BMD.

Adherence to healthy dietary pattern and risk of kidney disease: a systematic review and meta-analysis of observational studies

2020 ◽  
pp. 1-13
Author(s):  
Sepideh Soltani ◽  
Ahmad Jayedi
Keyword(s):  
Kidney Disease ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Lower Risk ◽  
Observational Studies ◽  
Meta Analysis ◽  
Data Driven ◽  
Inverse Association ◽  
Cross Sectional ◽  
Healthy Dietary Pattern

Abstract. Epidemiological studies show that adherence to healthy dietary patterns may be associated with a lower risk of decline in kidney function. However, existing evidence has not been quantitatively gathered. Pertinent observational studies investigating the association of adherence to a healthy dietary pattern, either priori-defined dietary pattern/indices or data-driven dietary patterns, with risk of kidney disease in the general population were identified by searching Medline and Scopus databases to May 28, 2018. A random-effects meta-analysis was applied. The analysis included eight prospective cohorts (5734 cases among 569,688 participants) and five cross-sectional studies (1955 cases among 16,614 participants). Higher adherence to a healthy dietary pattern (either priori-defined or data-driven dietary patterns) was associated with a 28% lower risk of kidney disease in the analysis of prospective cohort studies (RR = 0.72, 95 % CI = 0.58, 0.86; I2 = %71, n = 8). A subgroup analysis based on definition of healthy dietary pattern resulted in significant inverse association only in the subgroup of Dietary Approaches to Stop Hypertension dietary pattern (RR: 0.74, 95 % CI: 0.54, 0.93; I2 = 73%, n = 5). A dose-response analysis indicated a monotonic inverse association between adherence to the Dietary Approaches to Stop Hypertension dietary pattern with risk of kidney disease. A 32% lower risk was observed in the analysis of cross-sectional studies (OR: 0.68, 95 %CI: 0.53, 0.83, I2 = 0%, n = 5). The findings suggest that higher adherence to a healthy dietary pattern is associated with a lower risk of kidney disease.

Diet Quality and Risk of Parkinson’s Disease: A Prospective Study and Meta-Analysis

2020 ◽  
pp. 1-11
Author(s):  
Yi-Hsuan Liu ◽  
Gordon L. Jensen ◽  
Muzi Na ◽  
Diane C. Mitchell ◽  
G. Craig Wood ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cohort Study ◽  
Confidence Intervals ◽  
Diet Quality ◽  
Dietary Pattern ◽  
Disease Risk ◽  
Meta Analysis ◽  
Cox Proportional Hazards ◽  
Healthy Dietary Pattern

Background: Several dietary components have been shown to be neuroprotective against risk of neurodegeneration. However, limited observational studies have examined the role of overall diet quality on risk of Parkinson’s disease. Objectives: We examined the associations between diet quality and risk of Parkinson’s disease in a prospective cohort study and meta-analysis. Methods: Included in the cohort study were 3,653 participants (1,519 men and 2,134 women; mean age: 81.5 years) in the Geisinger Rural Aging Study longitudinal cohort in Pennsylvania. Diet quality was assessed using a validated dietary screening tool containing 25 food- and behavior-specific questions in 2009. Potential Parkinson’s cases were identified using electronic health records based on ICD9 (332.*), ICD10 (G20), and Parkinson-related treatments. Hazard ratios (HRs) and 95% confidence intervals (CIs) across diet quality tertiles were calculated using Cox proportional hazards models after adjusting for potential confounders. We further performed a meta-analysis by pooling our study with four published papers on this topic. Random-effects model was utilized to calculate the pooled risk ratios and 95% confidence intervals (CIs). Results: During a mean of 6.94 years of follow-up, 47 incident Parkinson’s cases were documented. Having high diet quality at baseline was associated with lower Parkinson’s disease risk (adjusted HR for the highest vs the lowest diet quality tertile = 0.39; 95% CI: 0.17, 0.89; p-trend = 0.02). The meta-analysis including 140,617 individuals also showed that adherence to high diet quality or a healthy dietary pattern was associated with lower risk of Parkinson’s disease (pooled risk ratio = 0.64; 95% CI: 0.49, 0.83). Conclusion: Having high diet quality or a healthy dietary pattern was associated with lower future risk of Parkinson’s disease.

scholarly journals Prevention of Type 2 Diabetes by Lifestyle Changes: A Systematic Review and Meta-Analysis

Nutrients ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2611 ◽  
Author(s):  
Matti Uusitupa ◽  
Tauseef A. Khan ◽  
Effie Viguiliouk ◽  
Hana Kahleova ◽  
Angela A Rivellese ◽  
...  
Keyword(s):  
Systematic Review ◽  
Type 2 Diabetes ◽  
Glucose Tolerance ◽  
Risk Reduction ◽  
Diet Quality ◽  
Lower Risk ◽  
Meta Analysis ◽  
Lifestyle Changes ◽  
Eligibility Criteria

Prevention of type 2 diabetes (T2D) is a great challenge worldwide. The aim of this evidence synthesis was to summarize the available evidence in order to update the European Association for the Study of Diabetes (EASD) clinical practice guidelines for nutrition therapy. We conducted a systematic review and, where appropriate, meta-analyses of randomized controlled trials (RCTs) carried out in people with impaired glucose tolerance (IGT) (six studies) or dysmetabolism (one study) to answer the following questions: What is the evidence that T2D is preventable by lifestyle changes? What is the optimal diet (with a particular focus on diet quality) for prevention, and does the prevention of T2D result in a lower risk of late complications of T2D? The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach was applied to assess the certainty of the trial evidence. Altogether seven RCTs (N = 4090) fulfilled the eligibility criteria and were included in the meta-analysis. The diagnosis of incident diabetes was based on an oral glucose tolerance test (OGTT). The overall risk reduction of T2D by the lifestyle interventions was 0.53 (95% CI 0.41; 0.67). Most of the trials aimed to reduce weight, increase physical activity, and apply a diet relatively low in saturated fat and high in fiber. The PREDIMED trial that did not meet eligibility criteria for inclusion in the meta-analysis was used in the final assessment of diet quality. We conclude that T2D is preventable by changing lifestyle and the risk reduction is sustained for many years after the active intervention (high certainty of evidence). Healthy dietary changes based on the current recommendations and the Mediterranean dietary pattern can be recommended for the long-term prevention of diabetes. There is limited or insufficient data to show that prevention of T2D by lifestyle changes results in a lower risk of cardiovascular and microvascular complications.

scholarly journals Understanding the influence of socioeconomic status on the association between combinations of lifestyle factors and adverse health outcomes: a systematic review protocol

BMJ Open ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. e042212
Author(s):  
Hamish Foster ◽  
Peter Polz ◽  
Frances Mair ◽  
Jason Gill ◽  
Catherine A O'Donnell
Keyword(s):  
Systematic Review ◽  
Socioeconomic Status ◽  
Health Outcomes ◽  
Meta Analysis ◽  
Lifestyle Factors ◽  
Lifestyle Factor ◽  
Unhealthy Lifestyle ◽  
Adverse Health ◽  
Adverse Health Outcomes ◽  
The Impact

IntroductionCombinations of unhealthy lifestyle factors are strongly associated with mortality, cardiovascular disease (CVD) and cancer. It is unclear how socioeconomic status (SES) affects those associations. Lower SES groups may be disproportionately vulnerable to the effects of unhealthy lifestyle factors compared with higher SES groups via interactions with other factors associated with low SES (eg, stress) or via accelerated biological ageing. This systematic review aims to synthesise studies that examine how SES moderates the association between lifestyle factor combinations and adverse health outcomes. Greater understanding of how lifestyle risk varies across socioeconomic spectra could reduce adverse health by (1) identifying novel high-risk groups or targets for future interventions and (2) informing research, policy and interventions that aim to support healthy lifestyles in socioeconomically deprived communities.Methods and analysisThree databases will be searched (PubMed, EMBASE, CINAHL) from inception to March 2020. Reference lists, citations and grey literature will also be searched. Inclusion criteria are: (1) prospective cohort studies; (2) investigations of two key exposures: (a) lifestyle factor combinations of at least three lifestyle factors (eg, smoking, physical activity and diet) and (b) SES (eg, income, education or poverty index); (3) an assessment of the impact of SES on the association between combinations of unhealthy lifestyle factors and health outcomes; (4) at least one outcome from—mortality (all cause, CVD and cancer), CVD or cancer incidence. Two independent reviewers will screen titles, abstracts and full texts of included studies. Data extraction will focus on cohort characteristics, exposures, direction and magnitude of SES effects, methods and quality (via Newcastle-Ottawa Scale). If appropriate, a meta-analysis, pooling the effects of SES, will be performed. Alternatively, a synthesis without meta-analysis will be conducted.Ethics and disseminationEthical approval is not required. Results will be disseminated via peer-reviewed publication, professional networks, social media and conference presentations.PROSPERO registration numberCRD42020172588.

scholarly journals The Role of Local Bupivacaine Irrigation in Postoperative Pain Control After Augmentation Mammoplasty: A Systematic Review and Meta-Analysis

2017 ◽  
Vol 25 (1) ◽  
pp. 32-39
Author(s):  
Shan Shan Qiu ◽  
Marta Roque ◽  
Yi-Chieh Chen
Keyword(s):  
Systematic Review ◽  
Postoperative Pain ◽  
Normal Saline ◽  
Pain Control ◽  
Meta Analysis ◽  
A Priori ◽  
Cochrane Collaboration ◽  
Cochrane Library ◽  
Augmentation Mammoplasty ◽  
Mesh Terms

Background: The objective of this study is to analyze the efficacy of local bupivacaine irrigation after augmentation mammoplasty for the control of postoperative pain. Methods: A systematic review and meta-analysis was conducted including all randomized controlled trials (RCTs) that compared the irrigation of bupivacaine (±ketorolac) versus normal saline or no irrigation for pain control after breast augmentation. The primary outcome was postoperative pain measured by visual analog scale. The study protocol was established a priori according to the recommendations of the Cochrane Collaboration. A bibliographical search was conducted in September 2015 in the following Cochrane Library databases: CENTRAL, MEDLINE, EMBASE, and Scielo. The strategy used for the search was ((augmentation AND (“mammoplasty”[MeSH Terms] OR “mammoplasty”)) OR ((“breast”[MeSH Terms] OR “breast”) AND augmentation)) AND ((“pain, postoperative”[MeSH Terms])). Results: Four RCTs with a total of 264 participants were included. Two trials compared bupivacaine alone versus placebo (normal saline or no irrigation) and 3 trials compared bupivacaine plus ketorolac versus placebo. The combined irrigation of bupivacaine and ketorolac showed a clinically significant reduction of pain in the first postoperative hour and on postoperative day 5. The irrigation with bupivacaine compared with placebo significantly reduced pain assessed on postoperative day 4. Conclusion: The irrigation of bupivacaine with or without ketorolac was associated with a reduction of postoperative pain compared with control groups for the first 5 postoperative days. Due to the few number of trials included, these results should be correlated further clinically.

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