Trial reportThe Journal of nutrition2026
Higher Prevalence of Inadequate Vitamin D Intake in Toddlers Not Consuming a Vitamin D Supplement in Vancouver, Canada.
Trial report in The Journal of nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- The 2024 Endocrine Society Guideline on Vitamin D: Comprehensive Summary and Critical Appraisal.Nutrients · 2026Pooled it
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundVitamin D is required for growth and development. However, little is known about dietary intake and status during early childhood.
objectivesTo determine vitamin D intake and status in a group of Canadian toddlers.
methodsThis is a secondary analysis of data from toddlers enrolled in a double-blind randomized controlled trial of fatty acid supplementation, between ages 1 y and 2 y in Vancouver (latitude 49°N), Canada. Dietary information was collected using a 3-d food record, and supplement use by questionnaire. Plasma 25-hydroxyvitamin D
resultsAt age 1 y (n = 110) and 2 y (n = 86), the top food sources of vitamin D were dairy (73‒81%), fish (6.8‒14%), and eggs (4.1‒5.5%). Vitamin D-containing supplements were consumed by 43% of the toddlers at age 1 y and 48% at 2 y. Daily median (interquartile range) total vitamin D intakes were 7.9 (4.9‒13) μg at age 1 y and 7.2 (4.8‒14) μg at age 2 y. There was a higher prevalence of inadequate intake (<10 μg/d) in toddlers not using vitamin D supplements at age 1 y (92% compared with 19%) and 2 y (96% compared with 34%). Overall, mean (standard deviation) 25OHD concentrations were 59.9 (17.6) nmol/L at age 1 y (n = 124) and 60.9 (13.6) nmol/L at 2 y (n = 104). The prevalence of low vitamin D status (<50 nmol/L) was 27% at age 1 y and 22% at 2 y. At age 1 y, the prevalence of low vitamin D status was higher in winter (adjusted prevalence 43% compared with 13%; P < 0.001). Total vitamin D intake correlated with 25OHD at both ages (r ∼0.2, P < 0.05).
conclusionsThese findings suggest a high prevalence of inadequate vitamin D intakes in toddlers who do not consume a vitamin D supplement. A national-level surveillance is needed for this important life stage.
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