Cross-Sectional and Longitudinal Associations Between Adherence to Mediterranean Diet with Physical Performance and Cognitive Function in Older Adults: A Systematic Review And Meta-Analysis

2021 ◽  
pp. 101395
Author(s):  
Hélio José Coelho-Júnior ◽  
Antonia Trichopoulou ◽  
Francesco Panza
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Cognitive Function ◽  
Mediterranean Diet ◽  
Physical Performance ◽  
Meta Analysis ◽  
Cross Sectional ◽  
Longitudinal Associations

scholarly journals Sleep Duration in Relation to Cognitive Function among Older Adults: A Systematic Review of Observational Studies

2016 ◽  
Vol 46 (1) ◽  
pp. 57-78 ◽  
Author(s):  
Elizabeth E. Devore ◽  
Francine Grodstein ◽  
Eva S. Schernhammer
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Cognitive Function ◽  
Sleep Duration ◽  
Observational Studies ◽  
English Language ◽  
Data Extraction ◽  
Meta Analysis ◽  
Short Sleep ◽  
Sleep Parameters

Context: Increasing evidence suggests that circadian and sleep parameters influence cognitive function with aging. Objective: To evaluate observational studies of sleep duration and cognition in older adults. Data Sources: A systematic review of OVID Medline and PsycINFO through September 2015, and review of bibliographies from studies identified. Study Selection: English-language articles reporting observational studies of sleep duration and cognitive function in older populations. Data Extraction: Data extraction by 2 authors using predefined categories of desired information. Results: Thirty-two studies met our inclusion criteria, with nearly two-thirds published in the past 4 years. One-third of studies indicated that extreme sleep durations were associated with worse cognition in older adults. More studies favored an association with long vs. short sleep durations (35 vs. 26% of studies, respectively). Four studies found that greater changes in sleep duration over time were related to lower cognition. Study design and analytic methods were very heterogeneous across studies; therefore, meta-analysis was not undertaken. Limitations: We reviewed English-language manuscripts only, with a qualitative summary of studies identified. Conclusions and Implications of Key Findings: Observational studies of sleep duration and cognitive function in older adults have produced mixed results, with more studies suggesting that long (rather than short) sleep durations are related to worse cognition. Studies more consistently indicate that greater changes in sleep duration are associated with poor cognition. Future studies should be prospectively designed, with objective sleep assessment and longer follow-up periods; intervention studies are also needed to identify strategies for promoting cognitive health with aging.

DHERENCE TO A MEDITERRANEAN DIET IS NOT ASSOCIATED WITH RISK OF SARCOPENIC SYMPTOMOLOGY: A CROSS-SECTIONAL ANALYSIS OF OVERWEIGHT AND OBESE OLDER ADULTS IN AUSTRALIA

2018 ◽  
pp. 1-4
Author(s):  
A. Stanton ◽  
J. Buckley ◽  
A. Villani
Keyword(s):  
Older Adults ◽  
Mediterranean Diet ◽  
Physical Performance ◽  
Gait Speed ◽  
Handgrip Strength ◽  
Future Research ◽  
Cross Sectional ◽  
Mediterranean Populations ◽  
Appendicular Skeletal Muscle ◽  
Sectional Analysis

Adherence to a Mediterranean Diet (MedDiet) is inversely associated with sarcopenia. The aim of this study was to examine the association between adherence to a MedDiet and sarcopenic symptomology in obese older adults. For confirmation of sarcopenia, low appendicular skeletal muscle (ASM: males, ≤7.25kg/m2; females, ≤5.5kg/m2) accompanied low handgrip strength (males, ≤30kg; females, ≤20kg) or low physical performance (Short Physical Performance Battery [SPPB]: ≤8; or gait speed: ≤0.8m/sec). Adherence to a MedDiet was determined using the Mediterranean Diet Adherence Screener (MEDAS). Sixty-five older adults were included. Adherence to a MedDiet was not associated with a decreased risk of sarcopenic symptomology (SPPB: OR = 0.20; 95% CI: 0.01-3.1; P = 0.234; Muscle strength: OR = 1.81; 95% CI: 0.32-10.15; P = 0.499; Gait speed: OR = 0.58; 95% CI: 0.13-2.50; P = 0.468). Future research should investigate whether a Mediterranean-style intervention can prevent or improve sarcopenic symptomology, including in non-Mediterranean populations.

scholarly journals Healthy dietary indices and risk of depressive outcomes: a systematic review and meta-analysis of observational studies

2018 ◽  
Vol 24 (7) ◽  
pp. 965-986 ◽  
Author(s):  
Camille Lassale ◽  
G. David Batty ◽  
Amaria Baghdadli ◽  
Felice Jacka ◽  
Almudena Sánchez-Villegas ◽  
...  
Keyword(s):  
Systematic Review ◽  
Relative Risk ◽  
Longitudinal Studies ◽  
Mediterranean Diet ◽  
Meta Analysis ◽  
Healthy Diet ◽  
Dietary Inflammatory Index ◽  
Cross Sectional ◽  
Inflammatory Index

AbstractWith depression being the psychiatric disorder incurring the largest societal costs in developed countries, there is a need to gather evidence on the role of nutrition in depression, to help develop recommendations and guide future psychiatric health care. The aim of this systematic review was to synthesize the link between diet quality, measured using a range of predefined indices, and depressive outcomes. Medline, Embase and PsychInfo were searched up to 31st May 2018 for studies that examined adherence to a healthy diet in relation to depressive symptoms or clinical depression. Where possible, estimates were pooled using random effect meta-analysis with stratification by observational study design and dietary score. A total of 20 longitudinal and 21 cross-sectional studies were included. These studies utilized an array of dietary measures, including: different measures of adherence to the Mediterranean diet, the Healthy Eating Index (HEI) and Alternative HEI (AHEI), the Dietary Approaches to Stop Hypertension, and the Dietary Inflammatory Index. The most compelling evidence was found for the Mediterranean diet and incident depression, with a combined relative risk estimate of highest vs. lowest adherence category from four longitudinal studies of 0.67 (95% CI 0.55–0.82). A lower Dietary Inflammatory Index was also associated with lower depression incidence in four longitudinal studies (relative risk 0.76; 95% CI: 0.63–0.92). There were fewer longitudinal studies using other indices, but they and cross-sectional evidence also suggest an inverse association between healthy diet and depression (e.g., relative risk 0.65; 95% CI 0.50–0.84 for HEI/AHEI). To conclude, adhering to a healthy diet, in particular a traditional Mediterranean diet, or avoiding a pro-inflammatory diet appears to confer some protection against depression in observational studies. This provides a reasonable evidence base to assess the role of dietary interventions to prevent depression. This systematic review was registered in the PROSPERO International Prospective Register of Systematic Reviews under the number CRD42017080579.

Vitamin B12, B6, or Folate and Cognitive Function in Community-Dwelling Older Adults: A Systematic Review and Meta-Analysis

2020 ◽  
Vol 77 (2) ◽  
pp. 781-794 ◽  
Author(s):  
Chenbo Zhang ◽  
Jianfeng Luo ◽  
Changzheng Yuan ◽  
Ding Ding
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Cognitive Function ◽  
Cognitive Decline ◽  
Vitamin B12 ◽  
Prospective Studies ◽  
Meta Analysis ◽  
Community Dwelling ◽  
Sensitivity Analyses ◽  
Community Dwelling Older Adults

Background: Previous studies have indicated that B vitamin deficiencies are an essential cause of neurological pathology. There is a need to provide evidence of the benefit of B vitamins for the prevention of cognitive decline in community-dwelling older adults. Objective: To examine the association between intake and plasma levels of vitamins B12, B6, and folate and cognitive function in older populations through a systematic review and meta-analysis. Methods: Medline (PubMed), EMBASE, and Cochrane databases were used to search the literature though August 8, 2019. We included observational population-based studies evaluating the association between concentrations or intake levels of vitamins B6, B12, or folate and cognition in older adults aged ≥45 years. The quality of all studies was assessed by the modified Newcastle-Ottawa Scale. Odds ratios (ORs) and hazard ratios (HRs) were analyzed by the random-effects model. Sensitivity analyses were conducted by excluding the studies with significant heterogeneity. Results: Twenty-one observational studies with sample sizes ranging from 155–7030 were included in the meta-analysis. Higher levels of vitamin B12 (OR = 0.77, 95% CI = 0.61–0.97) and folate concentration (OR = 0.68, 95% CI = 0.51–0.90) were associated with better cognition in cross-sectional studies, but not in sensitivity analyses or prospective studies. High vitamin B6 concentrations showed no significant benefit on cognition and dementia risk. Prospective studies did not provide substantial evidence for the relationship. Conclusion: The results from our meta-analysis suggest that vitamins B12, B6, and folate may not be modifiable risk factors for slowing cognitive decline among community-dwelling older individuals.

Sign in / Sign up

Export Citation Format

Share Document