Is Non-Alcoholic Fatty Liver Disease Connected with Cognition?: The Complex Interplay between Liver and Brain

The prevalence of non-alcoholic fatty liver disease (NAFLD) and its progressive form, non-alcoholic steatohepatitis (NASH), is increasing in parallel with the rising rates of obesity and type 2 diabetes. Approximately one in four adults are diagnosed with liver steatosis globally. NAFLD is associated with insulin resistance, hypertension, obesity, visceral adiposity, and dyslipidaemia. These risk factors are often accompanied by inflammation and oxidative stress, which also play a role in extrahepatic diseases, including conditions related to the central nervous system, such as mild cognitive impairment and Alzheimer’s disease. The number of people living with dementia is approximately 55 million and is estimated to increase to approximately 2 billion people by 2050. Recent studies have found that NAFLD is associated with poorer cognition. The aim of this review was to summarise the findings of hitherto studies that have linked NAFLD with cognition and dementia, as well as to discuss the potential liver–brain pathways

A pilot study of an intergenerational program for people in residential aged care with cognitive impairment and children from a co-located early learning centre during COVID-19

Intergenerational programs in residential aged care may improve well-being and combat loneliness and social isolation in older people with cognitive impairment. This pilot study investigated the effects of a semi-structured intergenerational group, including children from a co-located early learning centre and people living in residential aged care with cognitive impairment. This 9-week study used a mixed methods pre- and post-program design. Sessions were designed and delivered once per week by Occupational Therapists and took into account residents’ interests and children’s developmental needs and interests, identified in pre-program interviews. Nine older people with cognitive impairment and 13 children participated. The program was well attended despite disruptions and complications caused by COVID-19 and weather conditions. Older people valued the opportunity to engage with the children. Children were observed to gain confidence in communicating and forming friendships with older people with different levels of ability. There did not appear to be any change in loneliness or neuropsychiatric symptoms. The intergenerational program benefited participants and received strong support from family members and staff of the early learning centre and aged care home

The Effects of Dietary Advanced Glycation End-Products on Neurocognitive and Mental Disorders

Advanced glycation end products (AGEs) are glycated proteins or lipids formed endogenously in the human body or consumed through diet. Ultra-processed foods and some culinary techniques, such as dry cooking methods, represent the main sources and drivers of dietary AGEs. Tissue accumulation of AGEs has been associated with cellular aging and implicated in various age-related diseases, including type-2 diabetes and cardiovascular disease. The current review summarizes the literature examining the associations between AGEs and neurocognitive and mental health disorders. Studies indicate that elevated circulating AGEs are cross-sectionally associated with poorer cognitive function and longitudinally increase the risk of developing dementia. Additionally, preliminary studies show that higher skin AGE accumulation may be associated with mental disorders, particularly depression and schizophrenia. Potential mechanisms underpinning the effects of AGEs include elevated oxidative stress and neuroinflammation, which are both key pathogenetic mechanisms underlying neurodegeneration and mental disorders. Decreasing dietary intake of AGEs may improve neurological and mental disorder outcomes. However, more sophisticated prospective studies and analytical approaches are required to verify directionality and the extent to which AGEs represent a mediator linking unhealthy dietary patterns with cognitive and mental disorders

Physicochemical, antioxidant and sensory properties of Mango Sorbet containing L-theanine as a potential functional food product

The non-proteinous amino acid L-theanine (L-THE) is associated with a range of health benefits including improvements in immune function, cardiovascular outcomes and cognition. The aims of this study were to develop a food product (mango sorbet; ms-L-THE) containing physiologically relevant doses of L-THE (0.2/100 g w/w) and determine its antioxidant, physicochemical and sensory properties in comparison to a mango sorbet without L-THE (ms). Total phenolic and flavanol content, and antioxidant analysis (DPPH, FRAP and ABTS) were determined spectrophotometrically. Both products were also evaluated for acceptability and likeability in healthy participants using the 9-point hedonic scale. Any differences that could be caused by the addition of L-THE were examined using the triangle test. Results indicated no significant differences between ms-L-THE and ms in taste of the products (p > 0.05), and the ms-L-THE was well received and accepted as a potential commercial product. Findings of the DPPH assay indicated significant difference between the two products (p < 0.05). In conclusion, we have successfully created a mango sorbet that contains a potentially physiologically relevant concentration of L-THE with antioxidant properties that could be used as a novel method of L-THE delivery to clinical and healthy populations

Assessing the diet quality of individuals with rheumatic conditions:a cross-sectional study

Arthritis is a significant cause of chronic pain and disability, affecting around 3.5 million Australians. However, little is known regarding the overall diet quality of those living with arthritis. This study aimed to assess the dietary quality of Australians living in the Australian Capital Territory region with arthritis. This cross-sectional study analysed dietary intake data of individuals living with arthritis using a validated food frequency questionnaire. Dietary quality was assessed using the Healthy Eating Index-2015 (HEI-2015) to examine associations between diet composition, age, income and arthritis impact using the short form of the Arthritis Impact Measurement Scales 2 (AIMS2-SF). Participants, predominantly female (82.6%), were grouped by age: 18-50 years (n = 32), 50-64 years (n = 31), and 65 + years (n = 23). Significant correlations were observed between age and HEI-2015 (rs = 0.337, p = 0.002) and income and AIMS2-SF (rs = - 0.353, p < 0.001). The mean HEI-2015 score for the 18-49 years group was fair (72.1 ± 12.3), lower than both the 50-64 years group score of good (81.5 ± 9.72) (p = 0.004), and the 65 + years group score of good (81.8 ± 12.1) (p = 0.007). Dietary fibre, seafood and plant protein, fatty acids, and refined grains were identified as dietary components of concern for the 18-49 years group, and total fruit and added sugar were components of concern for people in the worst tertile for the AIMS2-SF. People aged between 18 and 49 years are consuming a lower quality diet compared to people aged 50 years and over. Further research is needed to understand why this association is occurring in this high socioeconomic region of Australia (a high-income country)

The association between sleeping time and metabolic syndrome features among older adults living in Mediterranean region. The MEDIS study.

Background: Metabolic Syndrome (MetS) as a combination of features has been known to significantly increase Cardiovascular Disease (CVD) risk, whilst MetS presence is linked to lifestyle parameters including physical activity and dietary habits; recently, the potential impact of sleeping habits has also become an issue under consideration. The aim of this study was to investigate the role of sleep quantity in several MetS components. Methods: Design:Cross-sectional observational study. Setting: 26 Mediterranean islands and the rural Mani region (Peloponnesus) of Greece. Participants: during 2005-2017, 3130 older (aged 65-100 years) Mediterranean residents were voluntarily enrolled. Measurements: Dietary habits (including MedDietScore assessment), physical activity status, socio-demographic characteristics, lifestyle parameters (sleeping and smoking habits) and clinical profile aspects including Metabolic Syndrome (MetS) components (i.e., waist circumference, systolic and diastolic blood pressure, fasting glucose, triglycerides, LDL and HDL-cholesterol) were derived through standard procedures. Results: The number of daily hours of sleep was independently associated with greater waist circumference (b coefficient per 1 hour=0.91, 95% Confidence Interval (CI); 0.34, 1.49), higher LDL-cholesterol levels (b per 1 hour=3.84, 95%CI; 0.63, 7.05) and lower diastolic blood pressure levels (b per 1 hour=-0.98, 95%CI; - 1.57, -0.39) after adjusting for participants’ age, gender, body mass index, daily walking time, level of adherence to Mediterranean diet and smoking status. No association was revealed between hours of sleep per day and fasting glucose, triglycerides, HDL-cholesterol and systolic blood pressure. Conclusions: Increased hours of sleep is an indicator of metabolic disorders among elderly inviduals, and further research is needed to identify the paths through which sleep quantity is linked to MetS features in different age-groups

Occupation-Based Interventions to Improve Occupational Performance Among Older Adults Living in Long-Term Care: A Systematic Review

Importance: Evidence for the positive effects of occupation-based interventions on occupational performance is increasing; however, little is known about the impacts of occupation-based interventions on older adults living in long-term care.Objective: To consolidate the evidence on the effectiveness of occupation-based interventions for improving occupational performance among older adults living in long-term care.Data Sources: MEDLINE, CINAHL, PsycINFO, SCOPUS, Web of Science Core Collection, and the Cochrane Central Register of Controlled Trials (CENTRAL) were searched from journal–database inception to February 2023.Study Selection and Data Collection: This systematic review is reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Included articles were peer-reviewed studies published in English that evaluated occupation-based interventions for older adults living in long-term care and used validated tools to measure occupational performance.Findings: Seventeen articles, with 2,974 participants, were identified. The reviewed studies included 6 Level 1b randomized controlled trials, 5 Level 2b studies of various study designs, and 5 Level 3b studies with quasi-experimental designs. Across studies, heterogeneous measures were used to assess occupational performance. All studies implemented client-centered, occupation-based interventions designed and/or delivered by occupational therapists. Interventions were tailored to residents’ goals, interests, or abilities to improve occupational performance and participation, and inconsistent effects were reported.Conclusions and Relevance: Moderate evidence supports the use of occupation-based interventions tailored to individual residents and incorporation of physical activities for improving the occupational performance of older adults living in long-term care. Currently, evidence for care partner involvement and multilevel occupation-based interventions is limited.Plain-Language Summary: This study adds to the evidence base indicating that occupation-based interventions have the potential to promote the occupational performance of older adults living in long-term care. High-quality randomized controlled trials with longer term follow-up and assessment of clinically meaningful outcomes are critical for developing the evidence base in this practice setting