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Sökning: WFRF:(Hassing Linda B)

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  • Dahl, Anna, 1975-, et al. (författare)
  • Being overweight in midlife is associated with lower cognitive ability and steeper cognitive decline in late life
  • 2010
  • Ingår i: The journals of gerontology. Series A, Biological sciences and medical sciences. - : Oxford University Press. - 1079-5006 .- 1758-535X. ; 65A:1, s. 57-62
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Although an increasing body of evidence links being overweight in midlife with an increased risk for dementia in late life, no studies have examined the association between being overweight in midlife and cognitive ability in late life. Our aim was to examine the association between being overweight in midlife as measured by body mass index (BMI) and cognitive ability assessed over time. METHODS: Participants in the Swedish Adoption/Twin Study Aging were derived from a population-based sample. The participants completed baseline surveys in 1963 or 1973 (mean age 41.6 years, range 25-63 years). The surveys included questions about height, weight, diseases, and lifestyle factors. Beginning in 1986, the same individuals were assessed on neuropsychological tests every 3 years (except in 1995) until 2002. During the study period, 781 individuals who were 50 years and older (60% women) had at least one complete neuropsychological assessment. A composite score of general cognitive ability was derived from the cognitive test battery for each measurement occasion. RESULTS: Latent growth curve models adjusted for twinness showed that persons with higher midlife BMI scores had significantly lower general cognitive ability and significantly steeper longitudinal decline than their thinner counterparts. The association did not change substantially when persons who developed dementia during the study period were excluded from the analysis. CONCLUSIONS: Higher midlife BMI scores precede lower general cognitive ability and steeper cognitive decline in both men and women. The association does not seem to be mediated by an increased risk for dementia
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  • Dahl, Anna, 1975-, et al. (författare)
  • Body Mass Index, Change in Body Mass Index, and Survival in Old and Very Old Persons
  • 2013
  • Ingår i: Journal of The American Geriatrics Society. - : Wiley. - 0002-8614 .- 1532-5415. ; 61:4, s. 512-518
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives To examine how body mass index (BMI) and change in BMI are associated with mortality in old (7079) and very old (80) individuals. Design Pooled data from three multidisciplinary prospective population-based studies: OCTO-twin, Gender, and NONA. Setting Sweden. Participants Eight hundred eighty-two individuals aged 70 to 95. Measurements BMI was calculated from measured height and weight as kg/m2. Information about survival status and time of death was obtained from the Swedish Civil Registration System. Results Mortality hazard was 20% lower for the overweight group than the normalunderweight group (relative risk (RR)=0.80, P=.011), and the mortality hazard for the obese group did not differ significantly from that of the normalunderweight group (RR=0.93, P=.603), independent of age, education, and multimorbidity. Furthermore, mortality hazard was 65% higher for the BMI loss group than for the BMI stable group (RR=1.65, P<.001) and 53% higher for the BMI gain group than for the BMI stable group (RR=1.53, P=.001). Age moderated the BMI change differences. That is, the higher mortality risks associated with BMI loss and gain were less severe in very old age. Conclusion Old persons who were overweight had a lower mortality risk than old persons who were of normal weight, even after controlling for weight change and multimorbidity. Persons who increased or decreased in BMI had a greater mortality risk than those who had a stable BMI, particularly those aged 70 to 79. This study lends further support to the belief that the World Health Organization guidelines for BMI are overly restrictive in old age.
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  • Dahl, Anna K, et al. (författare)
  • Is Self-reported Body Mass Index Less Reliable in Late Life?
  • 2010
  • Konferensbidrag (refereegranskat)abstract
    • Objectives: Self-reported Body Mass Index (BMI) based on self-reported height and weight is a widely used measure of adiposity in epidemiological research. Knowledge about the accuracy of these measures in late life is scarce, and especially if there is intra-individual changes over time. Methods: Seven hundred seventy-four men and women, aged 40 to 88 at baseline (mean age 63.9), in The Swedish Adoption/Twin Study of Aging self-reported and had their height and weight measured by experienced research nurses five times during a twenty year period. BMI was calculated as weight (kilos)/height (meter)2. Results: There was significant correlation between self-reported and measured height (0.97-0.98), weight (0.97-0.98), and BMI (0.93-0.95) at each measurement occasion, and substantial agreement for BMI as a categorical variable (Kappa coefficient 0.72-0.81). Latent growth curve modeling showed an increase in the mean difference between self-reported and measured values over time for height (0.04 cm/year) and BMI (0.02 kg/m2/year), but not for weight. Conclusions: There is a very small significant increase in the mean difference between self-reported and measured BMI with aging, mainly due to unawareness of changes in height, which probably would not affect the results when self-reported BMI is used as a continuous variable in longitudinal studies.
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  • Hassing, Linda B, et al. (författare)
  • Overweight in midlife is related to lower cognitive function later in life
  • 2010
  • Konferensbidrag (refereegranskat)abstract
    • Objectives: To examine the long-term effects of midlife overweight for cognitive abilities. The evidence is growing strong that overweight in midlife is related to increased dementia risk. Few studies have addressed the question if overweight affects cognitive abilities among those who do not develop dementia. In two studies we examined cognitive performance in two cohorts of people (young-old and old) in relation to self-reported Body Mass Index (BMI) in midlife. Methods: The participants are from the Swedish Twin Registry who participated in longitudinal studies on aging and cognition, the SATSA study (young-old cohort, 50 years and older) and the OCTO-Twin study (old cohort, 80 years and older) . BMI was reported in 1963 and cognitive abilities were examined 20- to 30-years later with five measurement occasions at 3-year intervals (SATSA) respectively 2-year intervals (OCTO-Twin). The cognitive abilities examined included tests of long-term memory, short-term memory, speed, verbal ability, spatial ability and a composite score representing general cognitive ability. Results: Multilevel modeling adjusting for twinship, demographic factors, cardiovascular diseases, and diabetes, showed that higher BMI in midlife predicted lower test performance 30 years later. Significant associations were found in all cognitive abilities. Although we found a significant cognitive decline across the five measurement occassions in both cohorts at the follow-up assessments, a higher midlife BMI was not associated with steeper decline in the old cohort, with the exception of verbal ability. This was, however, found for a measure of general cognitive ability and spatial ability in the young-old cohort.Conclusions: Our results indicate that midlife overweight is related to lower overall cognitive function in old age. The fact that BMI-related effects in slopes were only noted in some abilities in the young-old cohort suggests that the negative effect of overweight has an early onset.
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  • Lopes De Oliveira, Thaís, et al. (författare)
  • Effects from medications on functional biomarkers of aging in three longitudinal studies of aging in Sweden
  • 2024
  • Ingår i: Aging Cell. - : John Wiley & Sons. - 1474-9718 .- 1474-9726.
  • Tidskriftsartikel (refereegranskat)abstract
    • Antihypertensive, lipid-lowering, and blood glucose-lowering drugs have slowed down the aging process in animal models. In humans, studies are limited, have short follow-up times, and show mixed results. Therefore, this study aimed to estimate the effects of commonly used medications on functional aging, cognitive function, and frailty. We included information on individuals from three Swedish longitudinal population-based studies collected between 1986 and 2014. Our exposures were the 21 most used groups of medications among individuals aged 65 years and older in the Swedish population in 2022. Functional aging index (n = 1191), cognitive function (n = 1094), and frailty index (n = 1361) were the outcomes of interest. To estimate the medication effects, we used a self-controlled analysis, where each individual is his/her own control, thereby adjusting for all time-stable confounders. The analysis was additionally adjusted for time-varying confounders (chronological age, Charlson Comorbidity Index, smoking, body mass index, and the number of drugs). The participants were 65.5-82.8 years at the first in-person assessment. Adrenergics/inhalants (effect size = 0.089) and lipid-modifying agents/plain (effect size = 0.082) were associated with higher values of cognitive function (improvement), and selective calcium channel blockers with mainly vascular effects (effect size = -0.129) were associated with lower values of the functional aging index (improvement). No beneficial effects were found on the frailty index. Adrenergics/inhalants, lipid-modifying agents/plain, and selective calcium channel blockers with mainly vascular effects may benefit functional biomarkers of aging. More research is needed to investigate their clinical value in preventing adverse aging outcomes.
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