To understand how aging affects functional decline and increases disease risk, it is necessary to develop measures of how fast a person is aging. Using data from the Dunedin Study, we introduce an accurate and reliable measure for the rate of longitudinal aging derived from cross-sectional brain magnetic resonance imaging, that is, the Dunedin Pace… Continue reading DunedinPACNI estimates the longitudinal Pace of #Aging from a single brain #image to track health and disease
Category: Aging
0350 Objectively-Assessed #Napping Behaviors Predict #Mortality in Middle-to-Older Aged #Adults
IntroductionSelf-reported daytime napping is associated with various adverse health outcomes. We examined whether actigraphy-measured objective daytime napping behaviors predict all-cause mortality in middle-to-older aged adults in the UK Biobank.MethodsWe studied 86,565 participants (baseline age=63 years, SD=8, range: 43-79; 57% female) in the UK Biobank who did not have shiftwork history, completed a 7-day actigraphy monitoring,… Continue reading 0350 Objectively-Assessed #Napping Behaviors Predict #Mortality in Middle-to-Older Aged #Adults
Hybrid hydrogel–extracellular matrix scaffolds identify biochemical and mechanical signatures of #cardiac #ageing
Extracellular matrix remodelling of cardiac tissue is a key contributor to age-related cardiovascular disease and dysfunction. Such remodelling is multifaceted including changes to the biochemical composition, architecture and mechanics, clouding our understanding of how and which extracellular matrix properties contribute to a dysfunctional state. Here we describe a decellularized extracellular matrix–synthetic hydrogel hybrid scaffold that… Continue reading Hybrid hydrogel–extracellular matrix scaffolds identify biochemical and mechanical signatures of #cardiac #ageing
#Rapamycin, Not #Metformin, Mirrors #Dietary Restriction-Driven #Lifespan Extension in Vertebrates: A Meta-Analysis
Dietary restriction (DR) robustly increases lifespan across taxa. However, in humans, long-term DR is difficult to maintain, leading to the search for compounds that regulate metabolism and increase lifespan without reducing caloric intake. The magnitude of lifespan extension from two such compounds, rapamycin and metformin, remains inconclusive, particularly in vertebrates. Here, we conducted a meta-analysis… Continue reading #Rapamycin, Not #Metformin, Mirrors #Dietary Restriction-Driven #Lifespan Extension in Vertebrates: A Meta-Analysis
Rest #Activity Rhythms and their Association with #Cardiorespiratory Fitness and #Walking Energetics in #Older Adults: Study of Muscle, #Mobility and #Aging
Purpose It is recognized that disruptions in circadian behavior, such as with shift work or jet lag, are associated with diminished health. This known relationship implies that people with stronger indices of circadian behavior will exhibit improved physiology. To address the association between rhythmic activity behavior and physiology we proposed that metrics indicative of ‘more… Continue reading Rest #Activity Rhythms and their Association with #Cardiorespiratory Fitness and #Walking Energetics in #Older Adults: Study of Muscle, #Mobility and #Aging
Vitamin #D3 and marine ω-3 fatty acids supplementation and leukocyte #telomere length: 4-year findings from the VITamin D and OmegA-3 TriaL (VITAL) randomized controlled trial
Limited studies suggest that vitamin D or omega 3 fatty acids (n–3 FAs) supplementation may be beneficial for telomere maintenance; however, evidence from large randomized clinical trials is lacking. We hypothesized that vitamin D or n–3 FAs supplementation reduce leukocyte telomere length (LTL) attrition over time by leveraging the VITamin D and OmegA-3 TriaL (VITAL)… Continue reading Vitamin #D3 and marine ω-3 fatty acids supplementation and leukocyte #telomere length: 4-year findings from the VITamin D and OmegA-3 TriaL (VITAL) randomized controlled trial
Dietary #Carbohydrate Intake, Carbohydrate Quality, and Healthy #Aging in Women
Importance Dietary carbohydrate quality is inversely associated with risks of chronic disease and all-cause mortality. However, limited evidence exists regarding the role of carbohydrate quality and dietary carbohydrate types in promoting healthy aging.Objective To evaluate the long-term role of dietary carbohydrate intake and carbohydrate quality in healthy aging.Design, Setting, and Participants This prospective cohort study… Continue reading Dietary #Carbohydrate Intake, Carbohydrate Quality, and Healthy #Aging in Women
Cumulative associations between #health behaviours, mental well-being, and health over 30 years
BackgroundBoth the number of risky health behaviours and the duration of exposure to these behaviours over time may increase the risk of later adverse outcomes. This study examined cumulative associations of risky health behaviours with both positive and negative aspects of mental well-being and health. It has a uniquely long follow-up period of over 30 years,… Continue reading Cumulative associations between #health behaviours, mental well-being, and health over 30 years
Systemic deficits in lipid homeostasis promote aging-associated impairments in #B cell progenitor development
Organismal aging has been associated with diverse metabolic and functional changes across tissues. Within the immune system, key features of physiological hematopoietic cell aging include increased fat deposition in the bone marrow, impaired hematopoietic stem and progenitor cell (HSPC) function, and a propensity towards myeloid differentiation. This shift in lineage bias can lead to pre-malignant… Continue reading Systemic deficits in lipid homeostasis promote aging-associated impairments in #B cell progenitor development
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