ArticleThe Journal of nutrition2019
The Nitrogen Isotope Ratio Is a Biomarker of Yup'ik Traditional Food Intake and Reflects Dietary Seasonality in Segmental Hair Analyses.
Article in The Journal of nutrition, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 11 citations in OpenAlex.
- Obesity Prevalence and Dietary Factors Among Preschool-Aged Head Start Children in Remote Alaska Native Communities: Baseline Data from the "Childhood obesity (Print) · 2023Trial
- Amino Acid Nitrogen Isotope Ratios Respond to Fish and Meat Intake in a 12-Week Inpatient Feeding Study of Men.The Journal of nutrition · 2022Trial
- Livelihood and Dietary Transitions in Subsistence Populations of Northern Laos: Insights From Carbon and Nitrogen Stable Isotope Analysis.American journal of biological anthropology · 2026Article
- Dietary Factors and BMI Among Preschool-Aged Head Start Children and Home Caregivers in Remote Alaska Native Communities.Journal of racial and ethnic health disparities · 2026Article
- Urine Stable Isotope Ratios Are Associated with Proportional Intakes of Animal Protein and Added Sugars in a 15-Day Controlled Feeding Study.The Journal of nutrition · 2025Article
- Identifying sources of variation in added sugar intake for Alaska Native children using a hair biomarker.International journal of circumpolar health · 2024Article
- Diet quality is positively associated with intake of traditional foods and does not differ by season in remote Yup'ik communities.International journal of circumpolar health · 2023Article
- Habitual Intake of Marine-Derived n-3 PUFAs is Inversely Associated with a Cardiometabolic Inflammatory Profile in Yup'ik Alaska Native People.The Journal of nutrition · 2022Article
- Seasonal variation in added sugar or sugar sweetened beverage intake in Alaska native communities: an exploratory study.International journal of circumpolar health · 2021Article
- Characterizing Vegetable and Fruit Intake in a Remote Alaska Native Community Using Reflection Spectroscopy and 24-Hour Recalls.Journal of nutrition education and behavior · 2021Article
- Assessing geographic controls of hair isotopic variability in human populations: A case-study in Canada.PloS one · 2020Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 2 countries.
Funding
Abstract
backgroundThe nitrogen isotope ratio (NIR) is a promising index of traditional food intake for an Alaska Native (Yup'ik) population, which can be measured in blood and hair. However, the NIR has not been calibrated to high-quality measures of Yup'ik traditional food intake.
objectivesOur primary objective was to examine associations between intakes of Yup'ik traditional food groups, including fish, marine mammals, birds, land mammals, berries, greens, and total traditional foods, and the NIR. In an exploratory analysis, we also examined whether NIR analyzed sequentially along hair could reflect dietary seasonality.
methodsWe recruited 68 participants from 2 Yup'ik communities in the Yukon Kuskokwim region of Southwest Alaska (49% female, aged 14-79 y). Participants completed 4 unscheduled 24-h food recalls over the period peak of RBC and hair synthesis preceding a specimen collection visit. The NIR was measured in RBCs ( n = 68), a proximal hair section (n = 58), and sequential segments of hair from individuals in the upper 2 quartiles of traditional food intake having hair >6 cm in length, plus 2 low subsistence participants for reference (n = 18). Diet-biomarker associations were assessed using Pearson's correlation and linear regression.
resultsIntakes of fish, marine mammals, berries, and greens were significantly associated with the NIR. The strongest dietary association was with total traditional food intake (R2 = 0.62), which indicated that each 1‰ increase in the RBC NIR corresponded to 8% of energy from traditional foods. Hair NIR appeared to fluctuate seasonally in some individuals, peaking in the summertime.
conclusionsFindings support the use of the RBC and hair NIR to assess total traditional food intake in a Yup'ik population. Analyses of sequential hair NIR provided evidence of seasonality in traditional food intake, although seasonal variations were modest relative to interindividual variation.
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