This study will evaluate whether dietary supplement use (\> 1 year) is associated with differences in biological age relative to chronological age, as well as differences in metabolic health and functional fitness tests.
Using a cross-sectional study design, information will be obtained by biomarker analysis, questionnaires, physical examination, and physical function from a convenience sample of long-term users of dietary supplements. Comparison data for non-users and single multivitamin/mineral and multiple supplement users will be obtained from the National Health and Nutrition Examination Survey (NHANES).
Study Type
OBSERVATIONAL
Enrollment
300
No intervention: observational cohort
Biofortis Clinical Research
Addison, Illinois, United States
RECRUITINGDifference between biological and chronological age (years) calculated using a validated biological age calculator
Differences will be compared to an NHANES cohort, where possible.
Time frame: Baseline single assessment for this observational study
Blood pressure (mm Hg)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Heart rate (beats per minute)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Body weight (kg)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Body mass index (kg/m2)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Waist-to-hip ratio
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Body fat (%)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Fat-free body mass (kg)
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Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Grip strength (kg)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Single assessment for this observational study
Lower body strength assessed using the chair stand test (total number of stands)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Flexibility assessed using the sit and reach test (distance in inches reached)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Balance assessed using the one-legged stance test (hold time in seconds)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Quality of life as assessed by the CDC HRQOL-4 questionnaire (overall health rating and number of days)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Single assessment for this observational study
Cognition as assessed by the cognition scale of the Fatigue and Altered Cognition Scale questionnaire (cognition scale total score)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study
Social connection as assessed by the NIH Social Connection and Isolation Panel questionnaire (total score)
Differences will be assessed in comparison to an NHANES cohort
Time frame: Baseline single assessment for this observational study