Evidence map›Paper›PMID 33964850›Full record

ArticleThe American journal of clinical nutrition2021

Dietary patterns and hip fracture in the Adventist Health Study 2: combined vitamin D and calcium supplementation mitigate increased hip fracture risk among vegans.

Donna L Thorpe, W Lawrence Beeson, Raymond Knutsen, Gary E Fraser, Synnove F Knutsen

Open access · greenAbstract read
In one paragraph

Article in The American journal of clinical nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
7.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 53 citations in OpenAlex.

  1. Bone health: biology and nutrition.Current opinion in clinical nutrition and metabolic care · 2024
    Pooled it
  2. Review
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  8. Nutrition and Osteoporosis Prevention.Current osteoporosis reports · 2024
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Donna L ThorpeSchool of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA.ORCID 0000-0003-3644-4255
W Lawrence BeesonAdventist Health Study, School of Public Health, Loma Linda University, Loma Linda, CA, USA.
Raymond KnutsenAdventist Health Study, School of Public Health, Loma Linda University, Loma Linda, CA, USA.
Gary E FraserAdventist Health Study, School of Public Health, Loma Linda University, Loma Linda, CA, USA.
Synnove F KnutsenAdventist Health Study, School of Public Health, Loma Linda University, Loma Linda, CA, USA.
Loma Linda University · US

Funding

CANCER EPIDEMIOLOGY IN ADVENTISTS--A LOW RISK GROUPR01CA094594 · NCI · LOMA LINDA UNIVERSITY · PI FRASER, GARY E. · 2001 to 2008
$18.0M
Plant-based diets and risk of cancerU01CA152939 · NCI · LOMA LINDA UNIVERSITY · PI FRASER, GARY E. · 2011 to 2015
$5.7M
NCI NIH HHS 5R01-CA94594NCI NIH HHS U01 CA152939
6 · The paper itself

Abstract

backgroundConcerns regarding the adequacy of vegetarian diets with respect to fracture risk continue.

objectivesWe aimed to explore the influence of 5 previously defined dietary patterns on hip fracture risk and whether this association is modified by concomitant calcium and vitamin D supplementation.

methodsThe Adventist Health Study 2 is a prospective cohort study in which participants were enrolled during 2002-2007; proportional hazards regression analyses were used to estimate fracture risk. Participants reside throughout the United States and Canada. A total of 34,542 non-Hispanic white peri- and postmenopausal women and men 45 y and older responded to the biennial hospital history form and were followed for a median of 8.4 y.

resultsThe study identified 679 incident hip fractures during 249,186 person-years of follow-up. Fracture risk varied according to dietary pattern, with a clear effect modification by concurrent supplementation with both vitamin D and calcium. In multivariable models, including adjustment for calcium and vitamin D supplementation, female vegans had 55% higher risk of hip fracture (HR: 1.55; 95% CI: 1.06, 2.26) than nonvegetarians (NVEGs), whereas there was no association between diet pattern and hip fracture risk in men. When further stratifying females on supplement use with both vitamin D and calcium, vegans taking both supplements were at no greater risk of hip fracture than the subjects with other dietary patterns including the NVEGs.

conclusionsWithout combined supplementation of both vitamin D and calcium, female vegans are at high risk of hip fracture. However, with supplementation the excessive risk associated with vegans disappeared. Further research is needed to confirm the adequacy of a vegan diet supplemented with calcium and vitamin D with respect to risk of fracture.

Indexed as

Dietary SupplementsVegansAgedCalciumDietFemaleHip FracturesHumansMaleMiddle AgedRisk FactorsVitamin DCalciumVitamin DAdventist Health Studydietary nutrientsdiet patternhip fracturevegan

Identifiers

PMID33964850
PMCPMC8435998
OpenAlexW3162903257

What OpenQuestion holds

Textmetadata
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.