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Vitamin B12 deficiency was linked to higher fracture hazard after 50 (opens in a new tab)

news-medical.net · 2026-10-02

Short answerEvidenceSource

Short answer

Mostly not supported

Mostly not supported.

The claims we could check match the study, but some claims were not covered by the evidence reviewed.

  • 1 supported
  • 4 not covered

Checked against the study summary. The full text wasn't available, so some details couldn't be settled either way.

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1
2

NewsLink checks it

Mostly not supported

The one claim we could check holds up. One of five claims matches the study. This overall rating is based only on the claims we could check. Four claims the study doesn't address.

  • 1 supported
  • 4 not covered
Open claim evidence
3
Then inspect each claim

Evidence layer

Claim by claim

Each claim gets a verdict. Expand it to see the evidence directly below.

5 claims in this story

Showing all 5 claimsChoose a verdict to focus the list.

Claim 1 of 5Not coveredThe study found that abnormal vitamin B12 levels at both ends of the spectrum were associated with fractures, suggesting the relationship is more complex than deficiency alone.View evidenceHide evidence

Why this verdict

The supplied abstract-level profile supports a deficiency-versus-normal comparison, but it does not report borderline vitamin B12 levels, high vitamin B12 levels, or associations at both ends of the B12 spectrum. The headline-prominent claim therefore outruns what can be verified from the abstract profile.

Claim 2 of 5Not coveredThe article says the authors cautioned that the finding should not be interpreted as meaning vitamin B12 deficiency causes or predicts fracture, or that supplementation reduces fracture risk.View evidenceHide evidence

Why this verdict

The profile supports the caution that the findings do not establish causality or predictive utility. However, the specific statement that the authors cautioned against interpreting the study as evidence that supplementation reduces fracture risk is not present in the supplied abstract-level profile, so the full claim is not verifiable at this depth.

1

Study evidence

Vitamin B12 deficiency (≤199 pg/mL) versus normal (300–900 pg/mL) was associated with a higher hazard of incident fracture in the matched cohort over the full analytic period.HR 1.33 (95% CI 1.29–1.38)

“Using electronic health record data from the TriNetX Global Collaborative Network, we conducted a retrospective multicenter cohort study with a 1-year landmark design.”
2

Study evidence

Exploratory secondary analyses reported directionally similar associations between vitamin B12 deficiency and fracture-, fall-, and osteoporosis-related outcomes.

“Exploratory secondary analyses showed directionally similar associations for fracture-, fall-, and osteoporosis-related outcomes.”
Claim 3 of 5Not coveredThe article reports that fractures occurred in 7.2% of the vitamin B12-deficient group versus 6% of the reference group, and that adjusted fracture hazard was 33% higher in the deficiency group.View evidenceHide evidence

As stated7.2% vs 6%; 33% higher

Why this verdict

The abstract-level profile supports the adjusted hazard estimate: B12 deficiency was associated with higher incident fracture hazard, HR 1.33, which corresponds to about 33% higher hazard. However, the event percentages of 7.2% versus 6% are not provided in the supplied abstract profile, so the complete numerical claim is not verifiable at this depth.

1

Study evidence

Vitamin B12 deficiency (≤199 pg/mL) versus normal (300–900 pg/mL) was associated with a higher hazard of incident fracture in the matched cohort over the full analytic period.HR 1.33 (95% CI 1.29–1.38)

“Using electronic health record data from the TriNetX Global Collaborative Network, we conducted a retrospective multicenter cohort study with a 1-year landmark design.”
Claim 4 of 5Not coveredThe article says secondary outcomes were concordant, with higher hazards of osteoporosis, osteoporotic fracture, lower-limb fracture, all-cause falls, and repeated falls, and that borderline and high B12 levels were also associated with increased fracture hazard, though more weakly.View evidenceHide evidence

As stated22% to 50% higher hazards for secondary outcomes

Why this verdict

The abstract-level profile supports only that exploratory secondary analyses showed directionally similar associations for fracture-, fall-, and osteoporosis-related outcomes. It does not provide the named secondary endpoints, the stated 22% to 50% hazard range, or the borderline/high B12 findings. These details may require full-text evidence and are not verifiable from the supplied abstract profile.

1

Study evidence

Exploratory secondary analyses reported directionally similar associations between vitamin B12 deficiency and fracture-, fall-, and osteoporosis-related outcomes.

“Exploratory secondary analyses showed directionally similar associations for fracture-, fall-, and osteoporosis-related outcomes.”
Claim 5 of 5SupportedA recent retrospective study in Scientific Reports found an association between vitamin B12 deficiency and long-term fracture hazard in a propensity-matched cohort.View evidenceHide evidence

Why this verdict

The abstract-level profile supports a retrospective multicenter EHR cohort of adults ≥50 undergoing vitamin B12 testing, using propensity score matching, and finding an association between B12 deficiency and higher incident fracture hazard. The story frames this as associational and hedged rather than causal.

1

Study evidence

Vitamin B12 deficiency (≤199 pg/mL) versus normal (300–900 pg/mL) was associated with a higher hazard of incident fracture in the matched cohort over the full analytic period.HR 1.33 (95% CI 1.29–1.38)

“Using electronic health record data from the TriNetX Global Collaborative Network, we conducted a retrospective multicenter cohort study with a 1-year landmark design.”
Then look for missing context

Context layer

What the story left out

Important study details the story did not include.

  • Important modeling limitation: the proportional hazards assumption was violated for the full-period primary analysis.

    The paper profile treats this as a material limitation motivating a sensitivity analysis. The story caveats mention mortality and shorter follow-up but do not clearly identify the proportional-hazards violation reported in the abstract profile.

    From Retrospective multicenter EHR cohort; 1-year landmark; 1:1 propensity score matching; Cox proportional hazards; Restrict

  • Robustness analysis: a restricted 1–5-year sensitivity analysis found a similar association, HR 1.37 with 95% CI 1.32–1.42, without evidence of non-proportionality.

    The presented story claims do not report the 1–5-year sensitivity analysis or its hazard ratio.

    From Restricted 1–5-year Cox sensitivity analysis

  • Generalizability limitation: results apply to patients who underwent B12 testing and remained event-free through the 1-year landmark period.

    The story caveats mention limited generalizability to clinically tested patients, but they do not reflect the event-free-through-landmark restriction, which is part of the profile's material population limitation.

    From Retrospective multicenter EHR cohort; 1-year landmark; 1:1 propensity score matching; Cox proportional hazards; Restrict

5 things the story did carry across
  • Primary study design: retrospective multicenter EHR cohort of adults ≥50 undergoing vitamin B12 testing, with a 1-year landmark design and 1:1 propensity score matching comparing B12 deficiency with normal B12.
  • Primary finding: laboratory-defined B12 deficiency was associated with higher incident fracture hazard over the full analytic period, HR 1.33 with 95% CI 1.29–1.38.
  • Exploratory secondary analyses showed directionally similar associations for fracture-, fall-, and osteoporosis-related outcomes, but the abstract does not provide numerical estimates or detailed outcome definitions.
  • Interpretive caution: observational EHR data cannot establish causality, and findings do not establish B12 deficiency as a causal or predictive fracture marker.
  • Potential residual confounding: low B12 may be a marker of broader nutritional status, comorbidity, or healthcare utilization rather than an independent cause.
Then read the study layer

Study layer

Study at a glance

Scan the study first. Expand only the parts you want to inspect.

Pieces of work

3

Evidence read

study summary

Lead result

secondary data

1Lead resultsecondary dataDetermine whether laboratory-defined vitamin B12 deficiency is associated with subsequent incident fracture among adults ≥50 years undergoing B12 testing, using a retrospective multicenter EHR cohort with a 1-year landmark and propensity score matching.Retrospective multicenter EHR cohort; 1-year landmark; 1:1 propensity score matching; Cox proportional hazardsExpand

In plain English

Retrospective multicenter EHR cohort study (TriNetX) of adults ≥50 who underwent vitamin B12 testing, using a 1-year landmark and 1:1 propensity score matching (115,735 patients per group after matching) to compare laboratory-defined B12 deficiency (≤199 pg/mL) versus normal concentrations (300–900 pg/mL) for subsequent incident fracture. Over the full analytic period B12 deficiency was associated with higher fracture hazard (HR 1.33, 95% CI 1.29–1.38); proportional hazards were violated for the full period, and a 1–5-year sensitivity analysis showed a similar association (HR 1.37, 95% CI 1.32–1.42) without evidence of non-proportionality. The study is observational, uses an event-free 1-year landmark, and the authors state results do not establish causality or predictive utility.

Key findings

  • Vitamin B12 deficiency (≤199 pg/mL) versus normal (300–900 pg/mL) was associated with a higher hazard of incident fracture in the matched cohort over the full analytic period.HR 1.33 (95% CI 1.29–1.38)
  • Sensitivity analysis using a 1–5-year window (addressing non-proportional hazards) showed a similar association between B12 deficiency and incident fracture.HR 1.37 (95% CI 1.32–1.42)
“Using electronic health record data from the TriNetX Global Collaborative Network, we conducted a retrospective multicenter cohort study with a 1-year landmark design.”
What this piece can’t prove
  • Observational retrospective EHR study; cannot establish causality.
  • Results apply only to patients who underwent vitamin B12 testing and remained event-free through the 1-year landmark.
  • Proportional hazards assumption violated for the full analytic period, requiring sensitivity analysis.
  • Potential residual confounding and that low B12 may be a marker of broader nutritional status, comorbidity, or healthcare utilization (as noted by the authors).
2secondary dataAssess robustness of the fracture association given non-proportional hazards by conducting a restricted 1–5-year sensitivity analysis.Restricted 1–5-year Cox sensitivity analysisExpand

In plain English

Sensitivity analysis restricted follow-up to years 1–5 to address violation of the Cox proportional hazards assumption in the full-period fracture model; within this interval, vitamin B12 deficiency was associated with higher hazard of incident fracture (HR 1.37; 95% CI 1.32–1.42) and the authors report no evidence of non-proportionality.

Key findings

  • In the sensitivity analysis restricted to years 1–5, vitamin B12 deficiency was associated with higher hazard of incident fracture, and proportional hazards diagnostics showed no evidence of non-proportionality.HR 1.37 (95% CI 1.32–1.42)
“Because the proportional hazards assumption was violated, a 1–5-year sensitivity analysis showed a similar association (HR, 1.37; 95% CI, 1.32–1.42) without evidence of non-proportionality.”
What this piece can’t prove
  • Inference limited to the tested, propensity-score–matched cohort and to participants event-free through the landmark period.
  • Sensitivity analysis changes the analytic time window (different estimand) and therefore does not directly resolve potential biases present in the primary full-period analysis.

1 further detail could not be confirmed from the summary.

3secondary dataExplore associations between vitamin B12 deficiency and other clinically related outcomes (fracture-, fall-, and osteoporosis-related outcomes) as exploratory secondary analyses.Propensity-score–matched retrospective cohort (exploratory secondary endpoint analyses)Expand

In plain English

In the propensity-score–matched multicenter EHR cohort, exploratory secondary analyses reported directionally similar associations between laboratory-defined vitamin B12 deficiency and fracture-, fall-, and osteoporosis-related outcomes; effect estimates and outcome definitions for these secondary endpoints are not provided in the abstract.

Key findings

  • Exploratory secondary analyses reported directionally similar associations between vitamin B12 deficiency and fracture-, fall-, and osteoporosis-related outcomes.
“Exploratory secondary analyses showed directionally similar associations for fracture-, fall-, and osteoporosis-related outcomes.”
What this piece can’t prove
  • Abstract provides no definitions, effect estimates, or statistical details for the exploratory fracture-, fall-, and osteoporosis-related endpoints.
  • Analyses are labeled exploratory; the abstract does not report adjustments for multiplicity or present sensitivity analyses specific to these secondary outcomes.
  • Findings derive from an EHR-tested population and a 1-year landmark cohort and thus apply only to patients who underwent vitamin B12 testing and were event-free through the landmark period.

1 further detail could not be confirmed from the summary.

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Open the paper in Tessa

Vitamin B12 status and long-term fracture risk in a multicenter propensity score–matched cohort

Scientific Reports · 2026

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Why this one

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Papers considered

The selected paper, plus nearby candidates.

Crossref, PubMed, Europe PMC · 41 candidate papers

Selected

Vitamin B12 status and long-term fracture risk in a multicenter propensity score–matched cohort

Scientific Reports · 2026 · Crossref

Source (opens in a new tab)
CandidateOpen access

[Expression of Concern] Suppression of PTEN/AKT signaling decreases the expression of TUBB3 and TOP2A with subsequent inhibition of cell growth and induction of apoptosis in human breast cancer MCF-7 cells via ATP and caspase-3 signaling pathways.

2026 · Europe PMC

Tessa (opens in a new tab)Source (opens in a new tab)

And 35 more candidates considered.