Evidence map›Paper›PMID 41275510›Full record

SynthesisNutrition reviews2026

Vegetarian and Vegan Diets and the Risk of Hip Fracture in Adults: A Systematic Review and Meta-analysis.

Raquel Simões Ballarin, Taline Lazzarin, Marcos Ferreira Minicucci, Paula Schmidt Azevedo, Vania Dos Santos Nunes Nogueira, Daniela Schoberer, Manuela Hoedl, Doris Eglseer

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Nutrition reviews, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

8 authors.

Raquel Simões BallarinDepartment of Internal Medicine, Botucatu Medical School, São Paulo State University-UNESP, 18618-687 Botucatu, Brazil.ORCID 0000-0003-4979-0894
Taline LazzarinDepartment of Internal Medicine, Botucatu Medical School, São Paulo State University-UNESP, 18618-687 Botucatu, Brazil.ORCID 0000-0002-7544-6897
Marcos Ferreira MinicucciDepartment of Internal Medicine, Botucatu Medical School, São Paulo State University-UNESP, 18618-687 Botucatu, Brazil.ORCID 0000-0002-5980-4367
Paula Schmidt AzevedoDepartment of Internal Medicine, Botucatu Medical School, São Paulo State University-UNESP, 18618-687 Botucatu, Brazil.ORCID 0000-0002-5843-6232
Vania Dos Santos Nunes NogueiraDepartment of Internal Medicine, Botucatu Medical School, São Paulo State University-UNESP, 18618-687 Botucatu, Brazil.ORCID 0000-0001-9316-4167
Daniela SchobererInstitute of Nursing Science, Medical University of Graz, 8010 Graz, Austria.
Manuela HoedlInstitute of Nursing Science, Medical University of Graz, 8010 Graz, Austria.
Doris EglseerInstitute of Nursing Science, Medical University of Graz, 8010 Graz, Austria.ORCID 0000-0002-9739-7555

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior 001Programa Institucional de InternacionalizaçãoSão Paulo State UniversityUNESP
6 · The paper itself

Abstract

introductionHip fracture is an important cause of hospitalization, with high morbidity and mortality. Evidence suggests that vegetarians and vegans have lower bone mineral density, and plant-based diets are gaining popularity. However, the impact of these diets on the occurrence of hip fracture risk remains unclear.

objectiveThis systematic review aimed to assess the impact of vegetarian and vegan diets on the risk of hip fracture in adults.

methodsWe conducted a systematic review of studies comparing vegetarians and vegans with meat-eaters. We searched Medline, EMBASE, LILACS, CINAHL, Scopus, and Cochrane Central Register of Controlled Trials (CENTRAL). Two reviewers independently and in duplicate performed study selection, risk-of-bias assessment, and data extraction. Hazard ratios (HRs) with 95% CIs were calculated as an estimate of the effect of vegetarian and vegan diets. The quality of evidence was determined according to the Grading of Recommendations Assessment, Development, and Evaluation.

resultsFour cohort studies with 529 672 participants were included. Both vegetarian and vegan diets were associated with a higher risk of hip fracture after adjusting for confounders. Vegetarians had a 25% higher risk than meat-eaters (HR, 1.25; 95% CI, 1.11-1.39; 38 433 vegetarians; I2 = 0%; low certainty of evidence). Vegans had a 75% higher risk (HR, 1.75; 95% CI, 1.17-2.63; 5344 vegans; I2 =64%; very low certainty of evidence).

conclusionThese findings emphasize the importance of incorporating dietary patterns into strategies for promoting bone health, especially among individuals following plant-based diets. Healthcare providers should offer guidance to individuals adopting vegetarian or vegan diets to ensure adequate nutrient intake and support bone health. SYSTEMATIC REVIEW REGISTRATION: PROSPERO no. CRD 42024592448.

Indexed as

Diet, VeganDiet, VegetarianHip FracturesAdultBone DensityFemaleHumansRisk Factorsagingcohort studyhip fracturevegan dietvegetarian diet

Identifiers

PMID41275510
PMCPMC13659002

What OpenQuestion holds

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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.