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Dietary carotenoids and cognitive function among US adults, NHANES 2011-2014.

ABSTRACT: Objectives: Dietary carotenoids may limit neuronal damage from free radicals, potentially serving as a modifiable risk factor for cognitive decline. We examined intake of lutein and zeaxanthin (L and Z) in relation to cognitive performance among 2011-2014 National Health and Nutrition Examination Survey participants aged ≥60 years. Methods: L and Z intake from foods and supplements was estimated from two non-consecutive 24-hour diet recalls. Outcomes included the CERAD Word Learning sub-test score, Animal Fluency test score, and Digit Symbol Substitution test score. Regression models were adjusted for survey design variables, year, sex, age, race/ethnicity, body mass index, family income, education, alcohol, and smoking. Results: Among the 2796 participants, higher dietary intake of L and Z was associated with higher score on each test. For example, the highest quartile of L and Z intake was associated with a 2.52 point increase (SE=0.86 points, P=0.01) on the digit symbol score test, compared with the lowest quartile. There were differences by race/ethnicity, with positive associations generally stronger for Black compared to white participants. Discussion: Further research from longitudinal studies is needed, but increasing L and Z intake may help to prevent or slow cognitive decline.

SUBMITTER: Christensen K

PROVIDER: S-EPMC6467741 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:ObjectivesTo examine oral cancer screening rates and associated factors among adults with periodontal disease (PD). We hypothesized that adults with severe PD will be less likely to report receipt of any type of oral cancer screening than adults with no PD.Materials and methodsWe used 2011-2014 National Health and Nutrition Examination Survey (NHANES) data on adults ≥30 years. PD status was classified as no PD, mild/moderate PD and severe PD. Survey-adjusted logistic regression analysis was used to examine the model adjusted risk ratio (RR) and 95% confidence intervals (CI) for the outcome of not receiving intraoral, extraoral or both types of oral cancer screenings among adults with PD. Control variables included age, sex, race/ethnicity, health insurance, education, income level, smoking status, alcohol use and last dental visit.ResultsThe analytic sample included 6962 adults weighted to the national population of adults who had a periodontal examination during 2011-2014. Overall, 31.5%, 26.8% and 20.9% of adults reported receipt of intraoral, extraoral and both types of oral cancer screening, respectively. Almost 40% of adults had some form of PD (7.6% severe and 32.4% mild/moderate PD). A higher proportion of 45-64-year-olds, males, non-Hispanic Blacks, those with less than high school education, with income level less than 200% federal poverty level, or those with no insurance had severe PD than no PD. In adjusted analyses, adults with severe PD were significantly more likely to report no receipt of intraoral (RR = 1.25, 95% CI = 1.12-1.40), extraoral (RR = 1.17, 95% CI = 1.07-1.27) or both types of oral cancer screenings (RR = 1.18, 95% CI = 1.10-1.27) than those with no PD.ConclusionsSignificantly low proportion of adult's age ≥30 years with severe PD reported receiving any type of oral cancer screening. The association between PD and risk of oral cancers points to the need to improve oral cancer screening rates among adults with PD.

Project description:BackgroundEpidemiological evidence on Urine metals and cognitive impairment in older individuals is sparse and limited. The goal of this study was to analyze if there was a link between urinary metal levels and cognitive performance in U.S. people aged 60 and up.MethodsThe National Health and Nutrition Examination Survey (NHANES) data from 2011 to 2014 were utilized in this cross-sectional analysis. Memory function was quantified using the following methods: Established Consortium for Word Learning in Alzheimer's Disease (CERAD-WL) (immediate learning and recall and delayed recall), Animal Fluency Test (AFT), and Digit Symbol Substitution Test (DSST). An inductively coupled plasma mass spectrometry (ICP-MS) was used to estimate urine metal concentrations. The connection of Urine metals level with cognitive function was investigated employing binary logistic regression and restricted cubic spline models.ResultsA total of 840 participants aged 60 years and over were enrolled in this study. After controlling for confounders, the association between cadmium, barium, cobalt, cesium, manganese, and thallium and poor cognitive performance showed significance in multiple logistic regression compared to the lowest quartile of metals. In the DSST test, the weighted multivariate adjusted ORs (95% CI) for cadmium in the highest quartile, barium and cesium in the third quartile were 2.444 (1.310-4.560), 0.412 (0.180-0.942) and 0.440 (0.198-0.979), respectively. There were L-shaped associations between urine cesium, barium, or manganese and low cognitive performance in DSST. Urine lead, molybdenum and uranium did not show any significant relationships with cognitive impairment, respectively, compared to the respective lowest quartile concentrations.ConclusionThe levels of barium (Ba), cobalt (Co), cesium (Cs), manganese (Mn), and thallium (Tl) in urine were found to be negatively related to the prevalence of impaired cognitive performance in our cross-sectional investigation. Higher cadmium (Cd) levels were associated with cognitive impairment.

Project description:Handgrip strength has been shown an indispensable biomarker for older adults. Furthermore, the association between sleep duration and grip strength in special populations (e.g., type 2 diabetics) has been previously documented. However, the association between sleep duration and grip strength has been less studied in older adults and the dose-response relationship is unclear. Therefore, we drew 1881 participants aged 60 years and older from the National Health and Nutrition Examination Survey (NHANES) 2011-2014 to explore their association and the dose-response relationship. Sleep duration was obtained through self-report. Grip strength data were obtained through a grip test using a handgrip dynamometer and divided into two categories: low grip strength and normal grip strength. Thus, dichotomized grip strength was used as a dependent variable. Poisson regression and restricted cubic spline were used for the main part of the analysis. We found that long sleep duration (≥9 h) was associated with a higher prevalence of low grip strength than the normal sleep duration (7-<9 h) group (IRR: 1.38, 95% CI: 1.12-1.69). Moreover, the gender-stratified analysis did not change the original results. This association was particularly pronounced and further strengthened among participants with normal weight (BMI < 25) (IRR: 2.30, 95% CI: 1.64-3.22) and participants aged 60-70 (IRR: 1.76, 95% CI: 1.40-2.22). In addition, with the increase in sleep duration, the multivariate-adjusted IRRs of low grip strength had a general downward trend at first, followed by a brief period of stability, and then presented an upward trend (p-value for non-linearity = 0.001). According to this study, we found that older adults who had long sleep duration had a higher risk of low grip strength. Muscle insulin utilization and muscle glucose metabolism are closely related to grip strength, so our research emphasizes the importance of maintaining normal sleep duration in older adults and suggests that older adults who sleep for a long period should pay more attention to their muscle health.

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Dietary carotenoids and cognitive function among US adults, NHANES 2011-2014.

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