1
|
Kocatürk RR, Temizyürek A, Özcan ÖÖ, Ergüzel TT, Karahan M, Konuk M, Tarhan N. Effect of nutritional supports on malnutrition, cognition, function and biomarkers of Alzheimer's disease: a systematic review. Int J Neurosci 2023; 133:1355-1373. [PMID: 35686376 DOI: 10.1080/00207454.2022.2079506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 05/12/2022] [Indexed: 10/18/2022]
Abstract
AIM To summarize the nutritional supplementation on biochemical parameters, cognition, function, Alzheimer's Disease (AD) biomarkers and nutritional status. MATERIALS AND METHODS PubMed, Web of Science, Korean Journal Database, Russian Science Citation Index, SciELO Citation Index, Cochrane Library and Scopus databases were searched until 16 April 2021. 22.193 records in total were reached according to inclusion and exclusion criteria. Included Studies were evaluated through the Modified Jadad Scale and gathered under four subheadings. RESULTS Forty-eight studies with a total of 7009 AD patients were included. Souvenaid, ONS (368 ± 69 kcal), Vegenat-med, 500 mg Resveratrol, ONS (200 mL) were effective nutritional supplements on promoting weight gain and protecting malnutrition status but showed conflicting results in Body mass index, Mid-Upper-Arm Circumference and Triceps Skin Fold Thickness. ONS and a lyophilized whole supplementation Vegenat-med intake made an increase in MNA scores. While all nutritional supplements showed controversial results in biochemical parameters but caused a decrease in Hcy levels which caused reductions in brain Aβ plaque (increase serum Aβ), p-Tau and cognitive improvement. Folic acid and vitamin D decreased serum APP, BACE1, BACE1mRNA. Resveratrol, Hericium erinaceus mycelia, vitamin D and Betaine supplements improved cognitive, functional prognosis and quality of life unlike other nutritional supplements had no effect on cognitive scales. CONCLUSIONS Better designed trials with holistic measures are needed to investigate the effect of nutritional support on the AD biomarkers, cognitive status, biochemical parameters and functional states. Also, more beneficial results can be obtained by examining the simultaneous effects of nutritional supplements with larger sample groups.
Collapse
Affiliation(s)
- Rümeysa Rabia Kocatürk
- Department of Molecular Biology, Institute of Science, Üsküdar University, Istanbul, Turkey
| | - Arzu Temizyürek
- Department of Physiology, Faculty of Medicine, Altınbaş University, Istanbul, Turkey
| | - Öznur Özge Özcan
- Department of Molecular Neuroscience, Health Sciences Institute, Üsküdar University, Istanbul, Turkey
| | - Türker Tekin Ergüzel
- Department of Software Engineering, Faculty of Engineering and Natural Sciences, Üsküdar University, Istanbul, Turkey
| | - Mesut Karahan
- Department of Molecular Biology, Institute of Science, Üsküdar University, Istanbul, Turkey
- Department of Biomedical Device Technology, Vocational School of Health Sciences, Üsküdar University, Istanbul, Turkey
| | - Muhsin Konuk
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Üsküdar University, Istanbul, Turkey
| | - Nevzat Tarhan
- NP Istanbul Brain Hospital, Istanbul, Turkey
- Department of Psychiatry, School of Medicine, Üsküdar University, Istanbul, Turkey
| |
Collapse
|
2
|
Tinsley GM, Harty PS, Stratton MT, Siedler MR, Rodriguez C. Liposomal Mineral Absorption: A Randomized Crossover Trial. Nutrients 2022; 14:nu14163321. [PMID: 36014827 PMCID: PMC9414097 DOI: 10.3390/nu14163321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/25/2022] Open
Abstract
Multivitamin/mineral (MVM) supplements are one of the most popular dietary supplement categories. The purpose of this analysis was to determine if a novel liposomal delivery mechanism improves mineral absorption from an MVM product. In a randomized crossover trial, 25 healthy participants (12 females, 13 males) completed two testing sessions in which blood samples were collected at baseline and 2, 4, and 6 h following the ingestion of either a liposomal MVM or a nutrient-matched standard MVM. Analysis of MVM products indicated an elemental iron content of 9.4 and 10.1 mg (~50% U.S. FDA Daily Value) and an elemental magnesium content of 22.0 and 23.3 mg (~5% U.S. FDA Daily Value) in the liposomal and standard MVM products, respectively. Blood samples were analyzed for concentrations of iron and magnesium using colorimetric assays. Changes in mineral concentrations were analyzed using linear mixed models, and pharmacokinetic parameters were compared between conditions. For iron, statistically significant condition × time interactions were observed for percent change from baseline (p = 0.002), rank of percent change from baseline (p = 0.01), and raw concentrations (p = 0.02). Follow-up testing indicated that the liposomal condition exhibited larger changes from baseline than the standard MVM condition at 4 (p = 0.0001; +14.3 ± 18.5% vs. −6.0 ± 13.1%) and 6 h (p = 0.0002; +1.0 ± 20.9% vs. −21.0 ± 15.3%) following MVM ingestion. These changes were further supported by a 50% greater mean incremental area under the curve in the liposomal condition (33.2 ± 30.9 vs. 19.8 ± 19.8 mcg/dL × 6 h; p = 0.02, Cohen’s d effect size = 0.52). In contrast, no differential effects for magnesium absorption were observed. In conclusion, iron absorption from an MVM product is enhanced by a liposomal delivery mechanism.
Collapse
|
3
|
Huang L, Zhao J, Chen Y, Ma F, Huang G, Li W. Baseline folic acid status affects the effectiveness of folic acid supplements in cognitively relevant outcomes in older adults: a systematic review. Aging Ment Health 2022; 26:457-463. [PMID: 33463361 DOI: 10.1080/13607863.2021.1875194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Folic acid was investigated for decreased concentrations of the same type of cysteine (Hcy), which is considered a risk factor for Alzheimer's disease. However, the conclusions are inconsistent, while supplementing elders with different folic acid states. METHOD The PubMed, Science Network and EMBASE databases were searched for randomized controlled trials published over the past decade; The 11/485 study was included on the basis of pre-defined criteria. Cognitive-related results, including cognitive function and brain atrophy, were measured using cognitive scales and magnetic resonance imaging. RESULTS Significant cognitive benefits were reported in individuals with incomplete folic acid (n s 4); However, individuals with sufficient folic acid (n s 2) do not benefit from supplements, evaluated by the cognitive scale. On the other hand, a significant positive association was established in the participants of plasma Hcy, but the folic acid state was sufficient (n s 2). One study reported that folic acid supplements did not provide any benefit, but folic acid status data were missing. In addition, folic acid supplementation also improves brain atrophy (n s 2). CONCLUSION Baseline folic acid status may be a potential factor affecting the results of cognitive function folic acid supplementation in older adults. Older people with insufficient folic acid will benefit from folic acid supplementation.
Collapse
Affiliation(s)
- Ling Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China
| | - Jing Zhao
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China
| | - Yongjie Chen
- Department of Epidemiology and Biostatists, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| | - Fei Ma
- Department of Epidemiology and Biostatists, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, China.,Tianjin Key Laboratory for Environment, Nutrition and Public Health, Tianjin
| |
Collapse
|
4
|
Gauci S, Young LM, White DJ, Reddan JM, Lassemillante AC, Meyer D, Pipingas A, Scholey A. Diet May Moderate the Relationship Between Arterial Stiffness and Cognitive Performance in Older Adults. J Alzheimers Dis 2021; 85:815-828. [PMID: 34864661 PMCID: PMC8842781 DOI: 10.3233/jad-210567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Cognitive decline is influenced by various factors including diet, cardiovascular disease, and glucose control. However, the combined effect of these risk factors on cognitive performance is yet to be fully understood. OBJECTIVE The current study aimed to explore the inter-relationship between these risk factors and cognitive performance in older adults at risk of future cognitive decline. METHODS The sample comprised 163 (Age: M = 65.23 years, SD = 6.50) participants. Food Frequency Questionnaire data was used to score diet quality and adherence to the Western Style Diet (WSD) and Prudent Style Diet (PSD). Glucose control was gauged by serum levels of glycated hemoglobin (HbA1c) and arterial stiffness was measured using carotid to femoral pulse wave velocity. Cognitive performance was assessed using two subtests of the Swinburne University Computerized Cognitive Assessment Battery (SUCCAB) and Rey's Verbal Learning Test (RVLT). RESULTS Diet quality, adherence to the WSD or PSD, and glucose control were not significantly related to cognitive outcomes. However, a significant negative association was found between arterial stiffness and the spatial working memory subtest of SUCCAB (β= -0.21, p < 0.05). Arterial stiffness also significantly interacted with the PSD to impact total recall (F change (1,134) = 5.37, p < 0.05) and the composite score of RVLT (F change (1,134) = 4.03, p < 0.05). CONCLUSION In this sample of older adults at risk of cognitive decline, diet alone was not found to predict cognitive performance; however, it was found to moderate the relationship between arterial stiffness and cognition.
Collapse
Affiliation(s)
- Sarah Gauci
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia.,Heart and Mind Research, School of Medicine, Deakin University, Barwon Health, Geelong, Australia
| | - Lauren M Young
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia.,Food and Mood Centre, School of Medicine, Deakin University, Barwon Health, Geelong, Australia
| | - David J White
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia
| | - Jeffery M Reddan
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia
| | - Annie-Claude Lassemillante
- Department of Nursing and Allied Health, Faculty of Health, Arts and Design, Swinburne University, Melbourne, VIC, Australia
| | - Denny Meyer
- Department of Health Science and Biostatistics, Centre for Mental Health, Swinburne University, Melbourne, VIC, Australia
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia
| | - Andrew Scholey
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, VIC, Australia.,Nutrition Dietetics and Food, School of Clinical Sciences, Monash University, Melbourne, Australia
| |
Collapse
|
5
|
Denniss RJ, Barker LA, Day CJ. Improvement in Cognition Following Double-Blind Randomized Micronutrient Interventions in the General Population. Front Behav Neurosci 2019; 13:115. [PMID: 31191268 PMCID: PMC6547837 DOI: 10.3389/fnbeh.2019.00115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 05/14/2019] [Indexed: 11/20/2022] Open
Abstract
The impact of poor nutrition on physiological health is well understood (Costarelli et al., 2013). Less is known about the effects of diet on brain function and cognition in the general population (Ames, 2010; Parletta et al., 2013; White et al., 2017) and we are still in the early stages of understanding the role of specific nutrients to normal and pathological neuronal functioning. In the present study, the putative effect of a multivitamin/mineral or vitamin D supplement on cognitive function over an 8-week period was compared with volunteers taking vitamin C. Healthy adults (N = 60) were recruited, age range 21-59 years ( x ¯ = 39.07 years, SD = 11.46), with participants randomly allocated to conditions in a double-blind protocol. Participants also completed a 14-day food diary to gather information on micronutrient intake. The cognitive test battery included measures from the Wechsler Adult Intelligence Scale-III (WAIS-III; Wechsler et al., 2008), Wechsler Memory Scale-IV (WMS-IV; Wechsler, 2009) and Delis-Kaplan Executive Function System (D-KEFS; Delis et al., 2001), along with the Doors and People (Baddeley et al., 1994) and a serial reaction time task. Analyses showed better performance on some tasks in all groups following the intervention period, notably on measures of verbal and visual memory and visuomotor processing speed. The Multivitamin group showed significant improvements on tasks of visual strategy generation (along with the Vitamin C group), motor planning, explicit and implicit learning, and working memory. This evidence suggests that sub-optimal micronutrient intake may have a negative effect on cognition across the lifespan.
Collapse
Affiliation(s)
- Rebecca J. Denniss
- Centre for Behavioural Science and Applied Psychology, Department of Psychology, Sociology and Politics, Sheffield Hallam University, Sheffield, United Kingdom
| | | | | |
Collapse
|
6
|
Dresler M, Sandberg A, Bublitz C, Ohla K, Trenado C, Mroczko-Wąsowicz A, Kühn S, Repantis D. Hacking the Brain: Dimensions of Cognitive Enhancement. ACS Chem Neurosci 2019; 10:1137-1148. [PMID: 30550256 PMCID: PMC6429408 DOI: 10.1021/acschemneuro.8b00571] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 12/14/2018] [Indexed: 12/11/2022] Open
Abstract
In an increasingly complex information society, demands for cognitive functioning are growing steadily. In recent years, numerous strategies to augment brain function have been proposed. Evidence for their efficacy (or lack thereof) and side effects has prompted discussions about ethical, societal, and medical implications. In the public debate, cognitive enhancement is often seen as a monolithic phenomenon. On a closer look, however, cognitive enhancement turns out to be a multifaceted concept: There is not one cognitive enhancer that augments brain function per se, but a great variety of interventions that can be clustered into biochemical, physical, and behavioral enhancement strategies. These cognitive enhancers differ in their mode of action, the cognitive domain they target, the time scale they work on, their availability and side effects, and how they differentially affect different groups of subjects. Here we disentangle the dimensions of cognitive enhancement, review prominent examples of cognitive enhancers that differ across these dimensions, and thereby provide a framework for both theoretical discussions and empirical research.
Collapse
Affiliation(s)
- Martin Dresler
- Donders Institute for Brain, Cognition and Behaviour , Radboud University Medical Centre , Nijmegen 6525 EN , The Netherlands
| | - Anders Sandberg
- Future of Humanity Institute , Oxford University , Oxford OX1 1PT , United Kingdom
| | | | - Kathrin Ohla
- Institute of Neuroscience and Medicine, Cognitive Neuroscience (INM3) , Forschungszentrum Jülich , Jülich 52428 , Germany
| | - Carlos Trenado
- Institute of Clinical Neuroscience and Medical Psychology , Heinrich Heine University Düsseldorf , Düsseldorf 40225 , Germany
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors , TU Dortmund , Dortmund 44139 , Germany
| | | | - Simone Kühn
- Max Planck Institute for Human Development , Berlin 14195 , Germany
- Department of Psychiatry and Psychotherapy , University Clinic Hamburg Eppendorf , Hamburg 20246 , Germany
| | - Dimitris Repantis
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin 12203 , Germany
| |
Collapse
|
7
|
Hu J, Jia J, Zhang Y, Miao R, Huo X, Ma F. Effects of vitamin D 3 supplementation on cognition and blood lipids: a 12-month randomised, double-blind, placebo-controlled trial. J Neurol Neurosurg Psychiatry 2018; 89:1341-1347. [PMID: 30279212 DOI: 10.1136/jnnp-2018-318594] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/11/2018] [Accepted: 08/08/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Jing Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Jingya Jia
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yanping Zhang
- Department of Infectious Diseases, Tianjin Medical University General Hospital, Tianjin, China
| | - Rujuan Miao
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Xiaoxu Huo
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Fei Ma
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| |
Collapse
|
8
|
McCleery J, Abraham RP, Denton DA, Rutjes AWS, Chong L, Al‐Assaf AS, Griffith DJ, Rafeeq S, Yaman H, Malik MA, Di Nisio M, Martínez G, Vernooij RWM, Tabet N. Vitamin and mineral supplementation for preventing dementia or delaying cognitive decline in people with mild cognitive impairment. Cochrane Database Syst Rev 2018; 11:CD011905. [PMID: 30383288 PMCID: PMC6378925 DOI: 10.1002/14651858.cd011905.pub2] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Vitamins and minerals have many functions in the nervous system which are important for brain health. It has been suggested that various different vitamin and mineral supplements might be useful in maintaining cognitive function and delaying the onset of dementia. In this review, we sought to examine the evidence for this in people who already had mild cognitive impairment (MCI). OBJECTIVES To evaluate the effects of vitamin and mineral supplementation on cognitive function and the incidence of dementia in people with mild cognitive impairment. SEARCH METHODS We searched ALOIS, the Cochrane Dementia and Cognitive Improvement Group's (CDCIG) specialised register, as well as MEDLINE, Embase, PsycINFO, CENTRAL, CINAHL, LILACs, Web of Science Core Collection, ClinicalTrials.gov, and the WHO Portal/ICTRP, from inception to 25 January 2018. SELECTION CRITERIA We included randomised or quasi-randomised, placebo-controlled trials which evaluated orally administered vitamin or mineral supplements in participants with a diagnosis of mild cognitive impairment and which assessed the incidence of dementia or cognitive outcomes, or both. We were interested in studies applicable to the general population of older people and therefore excluded studies in which participants had severe vitamin or mineral deficiencies. DATA COLLECTION AND ANALYSIS We sought data on our primary outcomes of dementia incidence and overall cognitive function and on secondary outcomes of episodic memory, executive function, speed of processing, quality of life, functional performance, clinical global impression, adverse events, and mortality. We conducted data collection and analysis according to standard Cochrane systematic review methods. We assessed the risk of bias of included studies using the Cochrane 'Risk of bias' assessment tool. We grouped vitamins and minerals according to their putative mechanism of action and, where we considered it to be clinically appropriate, we pooled data using random-effects methods. We used GRADE methods to assess the overall quality of evidence for each comparison and outcome. MAIN RESULTS We included five trials with 879 participants which investigated B vitamin supplements. In four trials, the intervention was a combination of vitamins B6, B12, and folic acid; in one, it was folic acid only. Doses varied. We considered there to be some risks of performance and attrition bias and of selective outcome reporting among these trials. Our primary efficacy outcomes were the incidence of dementia and scores on measures of overall cognitive function. None of the trials reported the incidence of dementia and the evidence on overall cognitive function was of very low-quality. There was probably little or no effect of B vitamins taken for six to 24 months on episodic memory, executive function, speed of processing, or quality of life. The evidence on our other secondary clinical outcomes, including harms, was very sparse or very low-quality. There was evidence from one study that there may be a slower rate of brain atrophy over two years in participants taking B vitamins. The same study reported subgroup analyses based on the level of serum homocysteine (tHcy) at baseline and found evidence that B vitamins may improve episodic memory in those with tHcy above the median at baseline.We included one trial (n = 516) of vitamin E supplementation. Vitamin E was given as 1000 IU of alpha-tocopherol twice daily. We considered this trial to be at risk of attrition and selective reporting bias. There was probably no effect of vitamin E on the probability of progression from MCI to Alzheimer's dementia over three years (HR 1.02; 95% CI 0.74 to 1.41; n = 516; 1 study, moderate-quality evidence). There was also no evidence of an effect at intermediate time points. The available data did not allow us to conduct analyses, but the authors reported no significant effect of three years of supplementation with vitamin E on overall cognitive function, episodic memory, speed of processing, clinical global impression, functional performance, adverse events, or mortality (five deaths in each group). We considered this to be low-quality evidence.We included one trial (n = 256) of combined vitamin E and vitamin C supplementation and one trial (n = 26) of supplementation with chromium picolinate. In both cases, there was a single eligible cognitive outcome, but we considered the evidence to be very low-quality and so could not be sure of any effects. AUTHORS' CONCLUSIONS The evidence on vitamin and mineral supplements as treatments for MCI is very limited. Three years of treatment with high-dose vitamin E probably does not reduce the risk of progression to dementia, but we have no data on this outcome for other supplements. Only B vitamins have been assessed in more than one RCT. There is no evidence for beneficial effects on cognition of supplementation with B vitamins for six to 24 months. Evidence from a single study of a reduced rate of brain atrophy in participants taking vitamin B and a beneficial effect of vitamin B on episodic memory in those with higher tHcy at baseline warrants attempted replication.
Collapse
Affiliation(s)
- Jenny McCleery
- Oxford Health NHS Foundation TrustElms CentreOxford RoadBanburyOxfordshireUKOX16 9AL
| | - Rajesh P Abraham
- Surrey and Borders Partnership NHS Foundation TrustCommunity Mental Health Team for Older People:Waverley11‐13 Ockford RoadGuildfordUKGU7 1QU
| | - David A Denton
- Sussex Partnership NHS Foundation TrustSpecialist Older People's ServicesUckfield Community HosptialFramfield RoadUckfieldUKTN22 5AW
| | - Anne WS Rutjes
- Fondazione "Università G. D'Annunzio"Centre for Systematic ReviewsVia dei Vestini 31ChietiChietiItaly66100
- University of BernInstitute of Social and Preventive Medicine (ISPM)Mittelstrasse 43BernBernSwitzerland3012
| | | | - Aalya S Al‐Assaf
- Newcastle UniversityNIHR Innovation ObservatorySuite A, 4th Floor, Time CentralGallowgateNewcastle Upon TyneUKNE1 4BF
| | - Daniel J Griffith
- Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation TrustDepartment of Nutrition and DieteticsMindelsohn WayEdgbastonBirminghamWest MidlandsUKB15 2GW
| | - Shireen Rafeeq
- Central Park Medical CollegeCommunity MedicineCentral Park Housing Scheme, Ferozepur Road, Kahna NauLahorePunjabPakistan53100
| | - Hakan Yaman
- Faculty of Medicine, Akdeniz UniversityDepartment of Family MedicineAntalyaTurkey07059
| | - Muzaffar A Malik
- Brighton and Sussex Medical School, University of BrightonDepartment of Medical Education (Postgraduate)Room 341, Mayfield HouseFalmerUKBN1 9PH
| | - Marcello Di Nisio
- University "G. D'Annunzio" of Chieti‐PescaraDepartment of Medicine and Ageing SciencesVia dei Vestini 31Chieti ScaloItaly66013
| | - Gabriel Martínez
- Universidad de AntofagastaFaculty of Medicine and DentistryAvenida Argentina 2000AntofagastaChile127001
- Iberoamerican Cochrane CentreSant Antoni Maria Claret 167BarcelonaSpain08025
| | - Robin WM Vernooij
- Iberoamerican Cochrane CentreSant Antoni Maria Claret 167BarcelonaSpain08025
| | - Naji Tabet
- Brighton and Sussex Medical SchoolCentre for Dementia StudiesMayfield House, University of BrightonFalmerBrightonUKBN1 9PH
| | | |
Collapse
|
9
|
Astrup A, Bügel S. Overfed but undernourished: recognizing nutritional inadequacies/deficiencies in patients with overweight or obesity. Int J Obes (Lond) 2018; 43:219-232. [PMID: 29980762 DOI: 10.1038/s41366-018-0143-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 04/17/2018] [Accepted: 05/20/2018] [Indexed: 02/06/2023]
Abstract
Overweight and obesity are highly prevalent throughout the world and can adversely affect the nutritional status of individuals. Studies have shown that many people with obesity have inadequate intake of iron, calcium, magnesium, zinc, copper, folate and vitamins A and B12, likely as a result of poor diet quality. Nutritional inadequacies or deficiencies may also occur due to altered pharmacokinetics in the individual with obesity and due to interactions in those with overweight or obesity with various pharmaceuticals. However, it has been demonstrated that the adult population in the United States as a whole is deficient in certain micronutrients as a result of the availability and overconsumption of high-calorie, low-nutrient processed foods. Poor nutrition may contribute to the development of certain chronic conditions, such as type 2 diabetes, which is already more prevalent in those with obesity. Clinicians need to be aware of these gaps, particularly in those individuals with obesity who are undergoing bariatric surgery or taking pharmaceutical products long term to facilitate weight loss. Patients with overweight or obesity likely struggle to achieve a balanced diet and may benefit from consultation with a dietitian. Along with providing recommendations for healthy eating and exercise, supplementation with specific micronutrients or multivitamins should be considered for individuals at the highest risk for or with established deficiencies. Further research is needed to understand the factors underlying nutritional inadequacies in individuals with overweight or obesity, as well as the outcomes of treatment strategies employed to address them.
Collapse
Affiliation(s)
- Arne Astrup
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark.
| | - Susanne Bügel
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
10
|
Nkyekyer J, Meyer D, Blamey PJ, Pipingas A, Bhar S. Investigating the Impact of Hearing Aid Use and Auditory Training on Cognition, Depressive Symptoms, and Social Interaction in Adults With Hearing Loss: Protocol for a Crossover Trial. JMIR Res Protoc 2018; 7:e85. [PMID: 29572201 PMCID: PMC5889491 DOI: 10.2196/resprot.8936] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 12/31/2017] [Accepted: 01/03/2018] [Indexed: 12/01/2022] Open
Abstract
Background Sensorineural hearing loss is the most common sensory deficit among older adults. Some of the psychosocial consequences of this condition include difficulty in understanding speech, depression, and social isolation. Studies have shown that older adults with hearing loss show some age-related cognitive decline. Hearing aids have been proven as successful interventions to alleviate sensorineural hearing loss. In addition to hearing aid use, the positive effects of auditory training—formal listening activities designed to optimize speech perception—are now being documented among adults with hearing loss who use hearing aids, especially new hearing aid users. Auditory training has also been shown to produce prolonged cognitive performance improvements. However, there is still little evidence to support the benefits of simultaneous hearing aid use and individualized face-to-face auditory training on cognitive performance in adults with hearing loss. Objective This study will investigate whether using hearing aids for the first time will improve the impact of individualized face-to-face auditory training on cognition, depression, and social interaction for adults with sensorineural hearing loss. The rationale for this study is based on the hypothesis that, in adults with sensorineural hearing loss, using hearing aids for the first time in combination with individualized face-to-face auditory training will be more effective for improving cognition, depressive symptoms, and social interaction rather than auditory training on its own. Methods This is a crossover trial targeting 40 men and women between 50 and 90 years of age with either mild or moderate symmetric sensorineural hearing loss. Consented, willing participants will be recruited from either an independent living accommodation or via a community database to undergo a 6-month intensive face-to-face auditory training program (active control). Participants will be assigned in random order to receive hearing aid (intervention) for either the first 3 or last 3 months of the 6-month auditory training program. Each participant will be tested at baseline, 3, and 6 months using a neuropsychological battery of computer-based cognitive assessments, together with a depression symptom instrument and a social interaction measure. The primary outcome will be cognitive performance with regard to spatial working memory. Secondary outcome measures include other cognition performance measures, depressive symptoms, social interaction, and hearing satisfaction. Results Data analysis is currently under way and the first results are expected to be submitted for publication in June 2018. Conclusions Results from the study will inform strategies for aural rehabilitation, hearing aid delivery, and future hearing loss intervention trials. Trial Registration ClinicalTrials.gov NCT03112850; https://clinicaltrials.gov/ct2/show/NCT03112850 (Archived by WebCite at http://www.webcitation.org/6xz12fD0B).
Collapse
Affiliation(s)
- Joanna Nkyekyer
- Australian Research Council Training Centre in Biodevices, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn Victoria, Australia
| | - Denny Meyer
- Department of Statistics, Data Science and Epidemiology, Swinburne University of Technology, Hawthorn Victoria, Australia
| | - Peter J Blamey
- Blamey and Saunders Hearing Pty Ltd, Melbourne, Australia
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn Victoria, Australia
| | - Sunil Bhar
- Department of Psychological Sciences, Swinburne University of Technology, Hawthorn Victoria, Australia
| |
Collapse
|
11
|
Flitton M, Macdonald IA, Knight HM. Vitamin intake is associated with improved visuospatial and verbal semantic memory in middle-aged individuals. Nutr Neurosci 2017; 22:401-408. [PMID: 29098943 DOI: 10.1080/1028415x.2017.1395550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Factors maintaining cognitive health are still largely unknown. In particular, the cognitive benefits associated with vitamin intake and vitamin supplementation are disputed. We investigated self-reported vitamin intake and serum vitamin levels with performance in cognitive factors sensitive to dementia progression in two large middle-aged general population cohorts. METHODS Survey data were used to assess regular vitamin intake in 4400 NCDS 1958 and 1177 TwinsUK cohort members, and serum homocysteine and B vitamin levels were measured in 675 individuals from the TwinsUK study. Principal component analysis was applied to cognitive test performance from both cohorts resulting in two dementia-sensitive cognitive factors reflecting visuospatial associative memory and verbal semantic memory. RESULTS In both cohorts, individuals who reported regular intake of vitamins, particularly B vitamins, showed significantly better performance in visuospatial associative memory and verbal semantic memory (P < 0.001). A significant association was also found between homocysteine levels, vitamin serum concentration and visuospatial associative memory performance which indicated that individuals with high B vitamin and homocysteine levels showed better visuospatial associative memory performance than individuals with low vitamin B levels (P < 0.05). DISCUSSION The findings demonstrate that early dementia-sensitive cognitive changes can be identified in middle-aged asymptomatic individuals and that regular vitamin intake is associated with improved cognitive performance. These findings reinforce the potential cognitive benefits of regular vitamin intake, which should be considered as an economically viable therapeutic strategy for maintaining cognitive health.
Collapse
Affiliation(s)
- Miles Flitton
- a School of Life Sciences , University of Nottingham , Nottingham NG7 2UH , UK
| | - Ian A Macdonald
- a School of Life Sciences , University of Nottingham , Nottingham NG7 2UH , UK
| | - Helen M Knight
- a School of Life Sciences , University of Nottingham , Nottingham NG7 2UH , UK
| |
Collapse
|
12
|
Antony JM, Weaver I, Rueffer M, Guthrie N, Evans M. The Essentials of a Global Index for Cognitive Function. Transl Neurosci 2017; 8:87-96. [PMID: 28924492 PMCID: PMC5597950 DOI: 10.1515/tnsci-2017-0014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 08/02/2017] [Indexed: 12/11/2022] Open
Abstract
Cognition is comprised of the faculties: perception, creativity, intuition, and ratiocination. Optimal levels of cognition are needed for independent functioning and balanced living. With an aging population that continues to grow, dietary supplements that tilt the balance towards maintenance of cognition are being marketed for vulnerable populations facing these challenges. Randomized clinical trials provide the causal inference necessary to define the efficacy of emerging nutraceuticals. Cognition testing, in particular, requires a battery of tests that encompass all brain regions involved in cognition so as to provide endpoints necessary for product validation. The lack of well controlled studies for comparison analyses, limited sample sizes, ambiguous dosages, and poor cognitive measures result in data that cannot be compared across studies to determine the efficacy of supplements claiming to enhance cognition. Clinical trials for the nutraceutical industry should consider the multifaceted nature of supplements, where clinical endpoints must be comprehensive while remaining feasible. Combining endpoints of cognition with physiological biomarkers of immunity and metabolism to arrive at a global index for cognitive health may be necessary for claim substantiation in order to fully justify and scientifically validate improvements in cognitive health. The issues and needs of a global index will be discussed here.
Collapse
Affiliation(s)
| | - Ian Weaver
- Department of Psychology and Neuroscience, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Matthew Rueffer
- Robarts Clinical Trials, 100 Dundas St, London, ON N6A 5B6, Canada
| | - Najla Guthrie
- KGK Science Inc. 1440, One London Place, London, ON, N6A 5R8, Canada
| | - Malkanthi Evans
- KGK Science Inc. 1440, One London Place, London, ON, N6A 5R8, Canada
| |
Collapse
|
13
|
Zhang DM, Ye JX, Mu JS, Cui XP. Efficacy of Vitamin B Supplementation on Cognition in Elderly Patients With Cognitive-Related Diseases. J Geriatr Psychiatry Neurol 2017; 30:50-59. [PMID: 28248558 DOI: 10.1177/0891988716673466] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Increase in serum homocysteine is shown to be a potential risk factor for cognitive impairment. Evidence suggests that vitamin B supplementation may reduce cognitive decline by lowering the homocysteine levels. The current meta-analysis evaluated the efficacy of folic acid along with vitamin B12 and/or B6 in lowering homocysteine, thereby attenuating cognitive decline in elderly patients with Alzheimer disease or dementia. Randomized controlled trials (RCTs) comparing the efficacy of folate and B vitamin supplementation in patients with cognitive decline secondary to Alzheimer disease or dementia were identified using the keywords, "homocysteine, hyper-homocysteinemia, B vitamin, vitamin B6, B12, folic acid, cognitive, Alzheimer's disease, and dementia." The outcome measures analyzed were the Mini-Mental State Examination (MMSE) score and serum homocysteine. Of the 77 studies identified, 4 RCTs were included in the current meta-analysis. The baseline characteristics, age, and gender distribution of patients among the 2 groups (supplement vs placebo) were comparable. The results reveal that the intervention group achieved significantly greater reduction in homocysteine levels than the control (pooled difference in means = -3.625, 95% confidence interval [CI] = -5.642 to -1.608, P < .001). However, no significant difference in MMSE (pooled difference in means = 0.027, 95% CI = -0.518 to 0.573, P = 0.921) was observed between the groups. Taken together, vitamin B supplementation was effective in reducing serum homocysteine levels. However, it did not translate into cognitive improvement, indicating that the existing data on vitamin B-induced improvement in cognition by lowering homocysteine levels are conflicting.
Collapse
Affiliation(s)
- Dong-Mei Zhang
- 1 Department of Geriatrics, Fuzhou General Hospital of Nanjing Command, PLA and Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Jian-Xin Ye
- 2 Department of Neurology, Fuzhou General Hospital of Nanjing Command, PLA and Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Jun-Shan Mu
- 2 Department of Neurology, Fuzhou General Hospital of Nanjing Command, PLA and Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Xiao-Ping Cui
- 2 Department of Neurology, Fuzhou General Hospital of Nanjing Command, PLA and Clinical Medical College of Fujian Medical University, Fuzhou, China
| |
Collapse
|
14
|
Kennedy DO. B Vitamins and the Brain: Mechanisms, Dose and Efficacy--A Review. Nutrients 2016; 8:68. [PMID: 26828517 PMCID: PMC4772032 DOI: 10.3390/nu8020068] [Citation(s) in RCA: 428] [Impact Index Per Article: 53.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/11/2016] [Accepted: 01/21/2016] [Indexed: 12/12/2022] Open
Abstract
The B-vitamins comprise a group of eight water soluble vitamins that perform essential, closely inter-related roles in cellular functioning, acting as co-enzymes in a vast array of catabolic and anabolic enzymatic reactions. Their collective effects are particularly prevalent to numerous aspects of brain function, including energy production, DNA/RNA synthesis/repair, genomic and non-genomic methylation, and the synthesis of numerous neurochemicals and signaling molecules. However, human epidemiological and controlled trial investigations, and the resultant scientific commentary, have focused almost exclusively on the small sub-set of vitamins (B9/B12/B6) that are the most prominent (but not the exclusive) B-vitamins involved in homocysteine metabolism. Scant regard has been paid to the other B vitamins. This review describes the closely inter-related functions of the eight B-vitamins and marshals evidence suggesting that adequate levels of all members of this group of micronutrients are essential for optimal physiological and neurological functioning. Furthermore, evidence from human research clearly shows both that a significant proportion of the populations of developed countries suffer from deficiencies or insufficiencies in one or more of this group of vitamins, and that, in the absence of an optimal diet, administration of the entire B-vitamin group, rather than a small sub-set, at doses greatly in excess of the current governmental recommendations, would be a rational approach for preserving brain health.
Collapse
Affiliation(s)
- David O Kennedy
- Brain, Performance and Nutrition Research Centre, Northumbria University, Newcastle-upon-Tyne NE1 8ST, UK.
| |
Collapse
|
15
|
Al-Assaf AS, Denton DA, Abraham RP, Rutjes AWS, Chong LY, Anderson JL, Malik MA, Tabet N. Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in late life. Cochrane Database Syst Rev 2015. [DOI: 10.1002/14651858.cd011906] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Aalya S Al-Assaf
- Brighton and Sussex Medical School, University of Brighton; Division of Medical Education; Mayfield House Falmer UK BN1 9PH
| | - David A Denton
- Sussex Partnership NHS Foundation Trust; Specialist Older People's Services; Uckfield Community Hosptial Framfield Road Uckfield UK TN22 5AW
| | - Rajesh P Abraham
- Cognitive Treatment and Research Unit, Sussex Partnership NHS Foundation Trust; Old Age Psychiatry; Grove House Southfield Road Crowborough UK TN6 1HB
| | - Anne WS Rutjes
- Fondazione "Università G. D'Annunzio"; Centre for Systematic Reviews; Via dei Vestini 31 Chieti Chieti Italy 66100
- University of Bern; Institute of Social and Preventive Medicine (ISPM); Finkenhubelweg 11 Bern Bern Switzerland 3012
| | | | - John L Anderson
- Brighton and Sussex Medical School, University of Brighton; Division of Medical Education; Mayfield House Falmer UK BN1 9PH
| | - Muzaffar A Malik
- Brighton and Sussex Medical School, University of Brighton; Department of Medical Education (Postgraduate); Room 341, Mayfield House Falmer UK BN1 9PH
| | - Naji Tabet
- Brighton and Sussex Medical School; Postgraduate Medicine; Mayfield House, University of Brighton Falmer Brighton UK BN1 9PH
| |
Collapse
|
16
|
Denton DA, Abraham RP, Al-Assaf AS, Rutjes AWS, Chong LY, Anderson JL, Malik MA, Tabet N. Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid life. Cochrane Database Syst Rev 2015. [DOI: 10.1002/14651858.cd011904] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- David A Denton
- Sussex Partnership NHS Foundation Trust; Specialist Older People's Services; Uckfield Community Hosptial Framfield Road Uckfield UK TN22 5AW
| | - Rajesh P Abraham
- Cognitive Treatment and Research Unit, Sussex Partnership NHS Foundation Trust; Old Age Psychiatry; Grove House Southfield Road Crowborough UK TN6 1HB
| | - Aalya S Al-Assaf
- Brighton and Sussex Medical School, University of Brighton; Division of Medical Education; Mayfield House Falmer UK BN1 9PH
| | - Anne WS Rutjes
- Fondazione "Università G. D'Annunzio"; Centre for Systematic Reviews; Via dei Vestini 31 Chieti Chieti Italy 66100
- University of Bern; Institute of Social and Preventive Medicine (ISPM); Finkenhubelweg 11 Bern Bern Switzerland 3012
| | | | - John L Anderson
- Brighton and Sussex Medical School, University of Brighton; Division of Medical Education; Mayfield House Falmer UK BN1 9PH
| | - Muzaffar A Malik
- Brighton and Sussex Medical School, University of Brighton; Department of Medical Education (Postgraduate); Room 341, Mayfield House Falmer UK BN1 9PH
| | - Naji Tabet
- Brighton and Sussex Medical School; Postgraduate Medicine; Mayfield House, University of Brighton Falmer Brighton UK BN1 9PH
| |
Collapse
|
17
|
Abraham RP, Denton DA, Al-Assaf AS, Rutjes AWS, Chong LY, Malik MA, Tabet N. Vitamin and mineral supplementation for prevention of dementia or delaying cognitive decline in people with mild cognitive impairment. Cochrane Database Syst Rev 2015. [DOI: 10.1002/14651858.cd011905] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rajesh P Abraham
- Cognitive Treatment and Research Unit, Sussex Partnership NHS Foundation Trust; Old Age Psychiatry; Grove House Southfield Road Crowborough UK TN6 1HB
| | - David A Denton
- Sussex Partnership NHS Foundation Trust; Specialist Older People's Services; Uckfield Community Hosptial Framfield Road Uckfield UK TN22 5AW
| | - Aalya S Al-Assaf
- Brighton and Sussex Medical School, University of Brighton; Division of Medical Education; Mayfield House Falmer UK BN1 9PH
| | - Anne WS Rutjes
- Fondazione "Università G. D'Annunzio"; Centre for Systematic Reviews; Via dei Vestini 31 Chieti Chieti Italy 66100
- University of Bern; Institute of Social and Preventive Medicine (ISPM); Finkenhubelweg 11 Bern Bern Switzerland 3012
| | | | - Muzaffar A Malik
- Brighton and Sussex Medical School, University of Brighton; Department of Medical Education (Postgraduate); Room 341, Mayfield House Falmer UK BN1 9PH
| | - Naji Tabet
- Brighton and Sussex Medical School; Postgraduate Medicine; Mayfield House, University of Brighton Falmer Brighton UK BN1 9PH
| |
Collapse
|
18
|
Macpherson H, Rowsell R, Cox KHM, Scholey A, Pipingas A. Acute mood but not cognitive improvements following administration of a single multivitamin and mineral supplement in healthy women aged 50 and above: a randomised controlled trial. AGE (DORDRECHT, NETHERLANDS) 2015; 37:9782. [PMID: 25903286 PMCID: PMC4408300 DOI: 10.1007/s11357-015-9782-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 04/15/2015] [Indexed: 06/04/2023]
Abstract
A number of randomised controlled trials have indicated that multivitamin/mineral supplementation for a period of 4 weeks or greater can enhance mood and cognition. To date, no studies have investigated whether a single multivitamin dose can benefit mental function in older adults. This study investigated the acute effects of a single multivitamin and mineral and herbal (MVMH) supplement versus placebo on self ratings of mood and the performance of an effortful computerised cognitive battery in a sample of 76 healthy women aged 50-75 years. Mood was assessed using the depression anxiety stress scale (DASS), state trait anxiety inventory-state anxiety scale and visual analogue scales (VAS). Mood was rated at 1 h post supplementation and again after the competition of the cognitive assessments at 2 h post supplementation. It was demonstrated that the MVMH supplement improved overall DASS mood ratings; however, the most prominent effects appeared to be a reduction in ratings of perceived mental stress. These findings were confirmed using visual analogue scales, with these measures also demonstrating MVMH-related increased ratings of calmness. There were no benefits of the MVMH to mood ratings of depression and performance was not enhanced on the cognitive battery. Supplementation with a single multivitamin, mineral and herbal supplement reduces stress several hours after intake in healthy older people.
Collapse
Affiliation(s)
- H Macpherson
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, Australia,
| | | | | | | | | |
Collapse
|
19
|
Hardman RJ, Kennedy G, Macpherson H, Scholey AB, Pipingas A. A randomised controlled trial investigating the effects of Mediterranean diet and aerobic exercise on cognition in cognitively healthy older people living independently within aged care facilities: the Lifestyle Intervention in Independent Living Aged Care (LIILAC) study protocol [ACTRN12614001133628]. Nutr J 2015; 14:53. [PMID: 26003546 PMCID: PMC4449609 DOI: 10.1186/s12937-015-0042-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 05/15/2015] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND The rapid ageing of the population is becoming an area of great concern, both globally and in Australia. On a societal level, the cost of supporting an ageing demographic, particularly with their associated medical requirements, is becoming an ever increasing burden that is only predicted to rise in the foreseeable future. The progressive decline in individuals' cognitive ability as they age, particularly with respect to the ever increasing incidence of Alzheimer's Disease (AD) and other cognitive complications, is in many respects one of the foundation stones of these concerns. There have been numerous observational studies reporting on the positive effects that aerobic exercise and the Mediterranean diet appear to have on improving cognitive ability. However, the ability of such interventions to improve cognitive ability, or even reduce the rate of cognitive ageing, has not been fully examined by substantial interventional studies within an ageing population. METHODS The LIILAC trial will investigate the potential for cognitive change in a cohort of cognitively healthy individuals, between the ages of 60 and 90 years, living in independent accommodation within Australian aged care facilities. This four-arm trial will investigate the cognitive changes which may occur as a result of the introduction of aerobic exercise and/or Mediterranean diet into individuals' lifestyles, as well as the mechanisms by which these changes may be occurring. Participants will be tested at baseline and 6 months on a battery of computer based cognitive assessments, together with cardiovascular and blood biomarker assessments. The cardiovascular measures will assess changes in arterial stiffness and central pulse pressures, while the blood measures will examine changes in metabolic profiles, including brain derived neurotrophic factor (BDNF), inflammatory factors and insulin sensitivity. CONCLUSION It is hypothesised that exercise and Mediterranean diet interventions, both individually and in combination, will result in improvements in cognitive performance compared with controls. Positive findings in this research will have potential implications for the management of aged care, particularly in respect to reducing the rate of cognitive decline and the associated impacts both on the individual and the broader community. TRIAL REGISTRATION Australia New Zealand Clinical Trial Registry- ACTRN12614001133628.
Collapse
Affiliation(s)
- Roy J Hardman
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.
| | - Greg Kennedy
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.
| | - Helen Macpherson
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia. .,Centre for Physical Activity and Nutrition Research, Deakin University, Melbourne, Australia.
| | - Andrew B Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, Australia.
| |
Collapse
|
20
|
Harris E, Macpherson H, Pipingas A. Improved blood biomarkers but no cognitive effects from 16 weeks of multivitamin supplementation in healthy older adults. Nutrients 2015; 7:3796-812. [PMID: 25996285 PMCID: PMC4446780 DOI: 10.3390/nu7053796] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/11/2015] [Accepted: 05/13/2015] [Indexed: 12/22/2022] Open
Abstract
Supplementation with vitamins, minerals and phytonutrients may be beneficial for cognition, especially in older adults. The aim of this study was to assess the effects of multivitamin supplementation in older adults on cognitive function and associated blood biomarkers. In a randomised, double blind, placebo-controlled trial, healthy women (n = 68) and men (n = 48) aged 55–65 years were supplemented daily for 16 weeks with women’s and men’s formula multivitamin supplements. Assessments at baseline and post-supplementation included computerised cognitive tasks and blood biomarkers relevant to cognitive aging. No cognitive improvements were observed after supplementation with either formula; however, several significant improvements were observed in blood biomarkers including increased levels of vitamins B6 and B12 in women and men; reduced C-reactive protein in women; reduced homocysteine and marginally reduced oxidative stress in men; as well as improvements to the lipid profile in men. In healthy older people, multivitamin supplementation improved a number of blood biomarkers that are relevant to cognition, but these biomarker changes were not accompanied by improved cognitive function.
Collapse
Affiliation(s)
- Elizabeth Harris
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | - Helen Macpherson
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
- Centre for Physical Activity and Nutrition Research, School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC 3125, Australia.
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| |
Collapse
|
21
|
Pase MP, Grima N, Cockerell R, Stough C, Scholey A, Sali A, Pipingas A. The effects of long-chain omega-3 fish oils and multivitamins on cognitive and cardiovascular function: a randomized, controlled clinical trial. J Am Coll Nutr 2015; 34:21-31. [PMID: 25565485 DOI: 10.1080/07315724.2014.880660] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Fish oils and multivitamins are two of the most commonly used dietary supplements. Fish oil use may reduce vascular risk factors associated with cognitive decline, thus providing benefits to both heart and brain health. Multivitamins may also have direct effects on brain function. The present study investigated the effects of fish oil, with and without the addition of a multivitamin, on cognitive and cardiovascular function. METHODS In a randomized, placebo-controlled, double-blind fashion, 160 healthy adults aged 50-70 years were randomized to receive either 3 g of fish oil (240 mg eicosapentaenoic acid [EPA] + 240 mg docosahexaenoic acid [DHA]) with a multivitamin, 6 g of fish oil (480 mg EPA + 480 mg DHA) with a multivitamin, or 6 g of fish oil without a multivitamin or a placebo. Cognitive performance, brachial blood pressure, and aortic (central) blood pressure were measured at baseline, 6 weeks, and 16 weeks. RESULTS Treatment allocation had no effect on the primary cognitive outcomes at endpoint. Absolute increases in the red blood cell omega-3/6 ratio were associated with improvements in spatial working memory. The group receiving 6 g fish oil without the multivitamin displayed a significant decrease in aortic pulse pressure and aortic augmentation pressure, two measures of aortic blood pressure and aortic stiffness. CONCLUSIONS Fish oil decreased aortic pulse pressure and augmentation pressure. Reductions in aortic blood pressure were not accompanied by consistent improvements in cognition.
Collapse
Affiliation(s)
- Matthew P Pase
- a Centre for Human Psychopharmacology , Swinburne University of Technology , Hawthorn , AUSTRALIA
| | | | | | | | | | | | | |
Collapse
|
22
|
Ward E. Addressing nutritional gaps with multivitamin and mineral supplements. Nutr J 2014; 13:72. [PMID: 25027766 PMCID: PMC4109789 DOI: 10.1186/1475-2891-13-72] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 07/08/2014] [Indexed: 02/07/2023] Open
Abstract
A balanced and varied diet is the best source of essential vitamins and minerals; however, nutrient deficiencies occur, including in populations with bountiful food supplies and the means to procure nutrient-rich foods. For example, the typical American diet bears little resemblance to what experts recommend for fruit, vegetables, and whole grains, which serve as important sources of an array of vitamins and minerals. With time, deficiencies in one or more micronutrients may lead to serious health issues. A common reason people take multivitamin and mineral (MVM) supplements is to maintain or improve health, but research examining the effectiveness of MVMs in the prevention of certain chronic conditions is ongoing. In addition to the utility of MVMs for filling in relatively small but critical nutritional gaps, which may help prevent conditions such as anemia, neural tube defects, and osteoporosis, some evidence supports possible benefits of MVM supplementation with regard to cancer prevention (particularly in men) and prevention or delay of cataract, as well as some aspects of cognitive performance. Unlike some single-vitamin supplements, MVM supplements are generally well tolerated and do not appear to increase the risk of mortality, cerebrovascular disease, or heart failure. The potential benefits of MVM supplements likely outweigh any risk in the general population and may be particularly beneficial for older people.
Collapse
|
23
|
Pipingas A, Camfield DA, Stough C, Scholey AB, Cox KHM, White D, Sarris J, Sali A, Macpherson H. Effects of multivitamin, mineral and herbal supplement on cognition in younger adults and the contribution of B group vitamins. Hum Psychopharmacol 2014; 29:73-82. [PMID: 24424708 DOI: 10.1002/hup.2372] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 10/24/2013] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Cognitive benefits of multivitamins have been observed in the elderly, but fewer trials have investigated younger, healthy cohorts. This randomised, double-blind, placebo-controlled study investigated the cognitive effects of 16-week multivitamin supplementation in adults aged 20-49 years. METHOD A total of 138 participants aged 20-50 years were randomised and 116 completed the trial. The participants completed a computerised battery of cognitive tasks before and after 16-week supplementation with a multivitamin containing minerals and herbs or placebo. Blood measures of homocysteine, vitamin B6, B12 and folate were collected at both time points. RESULTS In men, there was a strong trend (p = 0.01; which did not reach significance when adjusted for multiple comparisons) for the multivitamin to improve performance on the incongruent stroop task, a measure of selective attention and response inhibition. There were no cognitive benefits of multivitamin supplements in women. Multivitamin supplementation substantially increased blood levels of vitamin B6, B12 and folate in both genders and decreased homocysteine in men. In men who received the multivitamin, improved stroop congruent performance was associated with increased vitamin B6 levels. CONCLUSION Multivitamin supplementation may be useful for maintaining levels of B vitamins. The effects of multivitamins on speeded attention such as the stroop task in young adults warrant further investigation.
Collapse
Affiliation(s)
- Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University, Melbourne, Australia
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Engelborghs S, Gilles C, Ivanoiu A, Vandewoude M. Rationale and clinical data supporting nutritional intervention in Alzheimer's disease. Acta Clin Belg 2014; 69:17-24. [PMID: 24635394 DOI: 10.1179/0001551213z.0000000006] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Adequate nutrition plays an important role in the maintenance of cognitive function, particularly during aging. Malnutrition is amongst the risk factors for developing mild cognitive impairment (MCI) and Alzheimer's disease (AD). Epidemiological studies have associated deficiencies in some nutrients with a higher risk of cognitive dysfunction and/or AD. Cognitive decline in AD is correlated with synaptic loss and many of the components required to maintain optimal synaptic function are derived from dietary sources. As synapses are part of the neuronal membrane and are continuously being remodelled, the availability of sufficient levels of nutritional precursors (mainly uridine monophosphate, choline and omega-3 fatty acids) to make the phospholipids required to build neuronal membranes may have beneficial effects on synaptic degeneration in AD. In addition, B-vitamins, phospholipids and other micronutrients act as cofactors to enhance the supply of precursors required to make neuronal membranes and synapses. Despite this, no randomized controlled trial has hitherto provided evidence that any single nutrient has a beneficial effect on cognition or lowers the risk for AD. However, a multi-target approach using combinations of (micro)nutrients might have beneficial effects on cognitive function in neurodegenerative brain disorders like AD leading to synaptic degeneration. Here we review the clinical evidence for supplementation, based on a multi-target approach with a focus on key nutrients with a proposed role in synaptic dysfunction. Based on preclinical evidence, a nutrient mixture, Souvenaid(®) (Nutricia N.V., Zoetermeer, The Netherlands) was developed. Clinical trials with Souvenaid(®) have shown improved memory performance in patients with mild AD. Further clinical trials to evaluate the effects of nutritional intervention in MCI and early dementia due to AD are on-going.
Collapse
|
25
|
Scholey AB, Camfield DA, Hughes ME, Woods W, K Stough CK, White DJ, Gondalia SV, Frederiksen PD. A randomized controlled trial investigating the neurocognitive effects of Lacprodan® PL-20, a phospholipid-rich milk protein concentrate, in elderly participants with age-associated memory impairment: the Phospholipid Intervention for Cognitive Ageing Reversal (PLICAR): study protocol for a randomized controlled trial. Trials 2013; 14:404. [PMID: 24279904 PMCID: PMC4220811 DOI: 10.1186/1745-6215-14-404] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 11/11/2013] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Age-related cognitive decline (ARCD) is of major societal concern in an ageing population, with the development of dietary supplements providing a promising avenue for amelioration of associated deficits. Despite initial interest in the use of phospholipids (PLs) for ARCD, in recent years there has been a hiatus in such research. Because of safety concerns regarding PLs derived from bovine cortex, and the equivocal efficacy of soybean-derived PLs, there is an important need for the development of new PL alternatives. Phospholipids derived from milk proteins represent one potential candidate treatment. METHODS In order to reduce the effects of age-associated memory impairment (AAMI) the Phospholipid Intervention for Cognitive Ageing Reversal (PLICAR) was developed to test the efficacy of a milk protein concentrate rich in natural, non-synthetic milk phospholipids (Lacprodan® PL-20). PLICAR is a randomized, double-blind, placebo-controlled parallel-groups study where 150 (N = 50/group) AAMI participants aged > 55 years will be randomized to receive a daily supplement of Lacprodan® PL-20 or one of two placebos (phospholipid-free milk protein concentrate or inert rice starch) over a 6-month (180-day) period. Participants will undergo testing at baseline, 90 days and 180 days. The primary outcome is a composite memory score from the Rey Auditory Verbal Learning Test. Secondary outcomes include cognitive (verbal learning, working memory, prospective and retrospective memory, processing speed and attention), mood (depression, anxiety, stress and visual analogue scales), cardiovascular (blood pressure, blood velocity and pulse wave pressure), gastrointestinal microbiota and biochemical measures (oxidative stress, inflammation, B vitamins and Homocysteine, glucoregulation and serum choline). Allelic differences in the Apolipoprotein E and (APOE) and Methylenetetrahydrofolate reductase (MTHFR) gene will be included for subgroup analysis. A subset (N = 60; 20/group)) will undergo neuroimaging using functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG) in order to further explore in vivo central mechanisms of action of Lacprodan® PL-20. This study will enable evaluation of the efficacy of milk-derived phospholipids for AAMI, and their mechanisms of action. TRIAL REGISTRATION The trial is jointly funded by Arla Foods and Swinburne University of Technology, currently recruiting and is registered on the Australian New Zealand Clinical Trials Registry as ACTRN12613000347763.
Collapse
Affiliation(s)
- Andrew B Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne 3122, Victoria, Australia.
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
The 2010 Dietary Guidelines Advisory Committee was charged with the task of investigating the effects of multivitamin/mineral supplements on healthy populations and also on those with chronic disease. The evidence from which the committee prepared its conclusions was graded on 5 fundamental criteria: quality, consistency, quantity, clinical impact, and generalizability. The committee concluded that for the general healthy population, evidence was insufficient to make a multivitamin/mineral recommendation. On the other hand, the committee noted the value of some supplemental nutrients for at-risk populations such as iron, folic acid, and vitamin B-12. However, most of the studies referenced for the research used the conventional, all-encompassing, and oversimplified definition of a multivitamin/mineral as being a supplement containing 3 or more vitamins with or without minerals. In the few years since the committee released its 2010 report, several randomized clinical trials showing the benefits of daily multivitamin/mineral supplementation have been completed using supplements containing at least 10 or more vitamins and/or minerals, but there also continues to be some reports that do not find benefit from such supplements. Furthermore, several steps have been taken to advance the science behind these supplements so that consumers, physicians, and government agencies can all have more confidence in understanding the role of supplemental nutrition in the American diet. This review provides new evidence from 2010 onward addressing the committee's primary concerns about multivitamin/mineral research in regard to improving public health. It also includes several recent studies that may be of interest to future committees indicating the potential benefits of these supplements on improving the cognitive performance and mental well-being of healthy populations.
Collapse
|
27
|
Shah R. The Role of Nutrition and Diet in Alzheimer Disease: A Systematic Review. J Am Med Dir Assoc 2013; 14:398-402. [DOI: 10.1016/j.jamda.2013.01.014] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 01/22/2013] [Indexed: 01/16/2023]
|
28
|
Sarris J, Cox KHM, Camfield DA, Scholey A, Stough C, Fogg E, Kras M, White DJ, Sali A, Pipingas A. Participant experiences from chronic administration of a multivitamin versus placebo on subjective health and wellbeing: a double-blind qualitative analysis of a randomised controlled trial. Nutr J 2012; 11:110. [PMID: 23241329 PMCID: PMC3545984 DOI: 10.1186/1475-2891-11-110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 11/30/2012] [Indexed: 11/16/2022] Open
Abstract
Background While many randomised controlled trials have been conducted on multivitamins, to our knowledge no qualitative research exploring the subjective experience of taking a multivitamin during a clinical trial has been reported. Methods Semi-structured and open-ended written questions were incorporated into a 16-week double-blind, randomised, placebo-controlled, parallel groups trial of once-daily multivitamin administration. At the final study visit (week 16), three open-ended questions were posed to elucidate any positive, negative or unusual experiences from taking either the multivitamin or matched placebo. Qualitative thematic analysis was undertaken by researchers who were blind as to treatment condition of participants, and triangulation (independent analysis from three researchers) was employed to ensure methodological rigour. Participant’s experiences were categorised as “positive” or “negative” and a Chi Square analysis was then applied to each of the experiential themes, to compare experiences between the multivitamin and placebo groups, (subdividing the groups by gender). Usual experiences were categorised and discussed separately. Results Of the 182 participants enrolled, 116 completed the study and qualitative data were available from 114 participants. Thematic analysis revealed significant effects in favour of the multivitamin over placebo for participants experiencing increased energy levels (p=.022) and enhanced mood (p=.027). The beneficial effect on energy levels was particularly evident among female participants. A trend was found for participants reporting better sleep in the multivitamin over placebo. The multivitamin and placebo groups did not significantly differ in perceived positive or negative effects in areas relating to other aspects of mental function or physical health. No significant negative effects were revealed, although there was a non-significant trend for more people in the multivitamin group having minor digestive complaints. Conclusion This represents the first documented qualitative investigation of participants’ experience of chronic administration of a multivitamin. Results uncovered a range of subjective beneficial effects that are consistent with quantitative data from previously published randomised controlled trials examining the effects of multivitamins and B vitamin complexes on mood and well-being. Trial registration Prior to commencement this trial was registered with the Australian New Zealand Clinical Trials Registry (
http://www.anzctr.org.au) ACTRN12611000092998
Collapse
Affiliation(s)
- Jerome Sarris
- Department of Psychiatry, The University of Melbourne, Melbourne, Australia
| | | | | | | | | | | | | | | | | | | |
Collapse
|