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Sökning: WFRF:(Iso Hiroyasu) > (2020-2021)

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  • Longinetti, Elisa, et al. (författare)
  • Heart rate, intelligence in adolescence, and Parkinson's disease later in life
  • 2021
  • Ingår i: European Journal of Epidemiology. - : Springer. - 0393-2990 .- 1573-7284.
  • Tidskriftsartikel (refereegranskat)abstract
    • To investigate whether physical and cognitive fitness measured in late adolescence was associated with future risk of Parkinson's disease (PD). The cohort included 1,259,485 Swedish men with physical fitness, body mass index (BMI), resting heart rate (RHR), blood pressure, intelligence quotient (IQ), and stress resilience measured at the age of 17-20 in relation to conscription. Incident cases of PD were ascertained from the Swedish Patient Register. Hazard ratios were estimated from Cox models, after controlling for multiple confounders. We further performed Mendelian randomization (MR) analyses to assess the causality of the associations, using GWAS summary statistics with > 800,000 individuals. During follow-up, we identified 1,034 cases of PD (mean age at diagnosis = 53). Men with an RHR > 100 beats per minute had a higher risk of PD compared to men with an RHR of 60-100 beats per minute (HR = 1.47; 95% CI = 1.08-1.99). Men with IQ above the highest tertile had a higher risk of PD compared to men with an IQ below the lowest tertile (HR = 1.46; 95% CI = 1.19-1.79). We found no association for physical fitness, BMI, blood pressure, or stress resilience. A causal relationship was suggested by the MR analysis between IQ and PD, but not between RHR and PD. RHR and IQ in late adolescence were associated with a higher risk of PD diagnosed at relatively young age. The association of IQ with PD is likely causal, whereas the association of RHR with PD suggests that altered cardiac autonomic function might start before 20 years of age in PD.
  • Brunner, Eric J., et al. (författare)
  • Appetite disinhibition rather than hunger explains genetic effects on adult BMI trajectory
  • 2021
  • Ingår i: International Journal of Obesity. - : Nature Publishing Group. - 0307-0565 .- 1476-5497. ; 45, s. 758-765
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND/OBJECTIVES: The mediating role of eating behaviors in genetic susceptibility to weight gain during mid-adult life is not fully understood. This longitudinal study aims to help us understand contributions of genetic susceptibility and appetite to weight gain.SUBJECTS/METHODS: We followed the body-mass index (BMI) trajectories of 2464 adults from 45 to 65 years of age by measuring weight and height on four occasions at 5-year intervals. Genetic risk of obesity (gene risk score: GRS) was ascertained, comprising 92 BMI-associated single-nucleotide polymorphisms and split at a median (=high and low risk). At the baseline, the Eating Inventory was used to assess appetite-related traits of 'disinhibition', indicative of opportunistic eating or overeating and 'hunger' which is susceptibility to/ability to cope with the sensation of hunger. Roles of the GRS and two appetite-related scores for BMI trajectories were examined using a mixed model adjusted for the cohort effect and sex.RESULTS: Disinhibition was associated with higher BMI (beta = 2.96; 95% CI: 2.66-3.25 kg/m(2)), and accounted for 34% of the genetically-linked BMI difference at age 45. Hunger was also associated with higher BMI (beta = 1.20; 0.82-1.59 kg/m(2)) during mid-life and slightly steeper weight gain, but did not attenuate the effect of disinhibition. CONCLUSIONS: Appetite disinhibition is most likely to be a defining characteristic of genetic susceptibility to obesity. High levels of appetite disinhibition, rather than hunger, may underlie genetic vulnerability to obesogenic environments in two-thirds of the population of European ancestry.
  • Svensson, Thomas, et al. (författare)
  • The association between habitual sleep duration and mortality according to sex and age : the Japan Public Health Center-based Prospective Study
  • 2021
  • Ingår i: Journal of Epidemiology. - : Elsevier. - 0917-5040. ; 31:2, s. 109-118
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundShort and long sleep durations are associated with mortality outcomes. The association between sleep duration and mortality outcomes may differ according to sex and age.MethodsParticipants of the Japan Public Health Center-based prospective study (JPHC Study) were aged 40-69 years and had completed a detailed questionnaire on lifestyle factors. Sex- and age-stratified analyses on the association between habitual sleep duration and mortality from all-causes, cardiovascular diseases (CVD), cancer and other causes included 46,152 men and 53,708 women without a history of CVD or cancer. Cox proportional hazards regression models, adjusted for potential confounders, were used to determine hazard ratios and 95% confidence intervals.ResultsMean follow-up time was 19.9 years for men and 21.0 years for women. In the multivariable sex-stratified models, and compared with 7 hours, some categories of sleep durations ≥ 8 hours were positively associated with mortality from all-causes, CVD, and other causes in men and women. The sex- and age-stratified analyses did not reveal any major differences in the association between sleep duration and mortality outcomes in groups younger and older than 50 years of age. The only exception was the significant interaction between sleep duration and age in women for mortality from other causes.ConclusionsSleep durations ≥8 hours are associated with mortality outcomes in men and women. Age may be an effect modifier for the association between sleep duration and mortality from other causes in women.
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