Skip to main content
Tessa NewsLink
Paste a health news link, or browse
Latest checks

Source study found

Story checked

Low vitamin B12 is linked to heart disease. Supplements tell a different story (opens in a new tab)

news-medical.net · 2026-10-27

Short answerEvidenceSource

Short answer

Not assessed

Check incomplete.

We found a likely source study, but its evidence could not be prepared for claim review. The article's claims remain unverified.

Share this check

Follow the evidence trail
1
2

NewsLink checks it

Source study identified.

A source study was identified, but the study's evidence could not be prepared for claim assessment. No claim verdicts are available.

View article claims
3
Then inspect each claim

Evidence layer

Claim by claim

A source study was identified, but the study's evidence could not be prepared for claim assessment. The claims below have not been assessed.

Claim 1 of 8Not checkedLow vitamin B12 concentrations are associated with cardiovascular disease.View evidenceHide evidence

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 2 of 8Not checkedSupplementation has not consistently prevented major cardiovascular events.View evidenceHide evidence

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 3 of 8Not checkedThe strongest evidence of a possible clinical benefit concerns combined B-vitamin therapy for stroke prevention, particularly in populations without mandatory folic acid fortification.View evidenceHide evidence

As statedapproximately 10 percent relative reduction in stroke incidence overall; 30 to 35 percent in a subgroup without folic acid fortification

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 4 of 8Not checkedThe review draws on laboratory studies, large population studies, and clinical trials to evaluate the role of vitamin B12 in cardiovascular health.View evidenceHide evidence

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 5 of 8Not checkedThe review cites prior observational studies linking low vitamin B12 levels with stroke, heart failure, markers of arrhythmia susceptibility, atherosclerosis, and death.View evidenceHide evidence

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 6 of 8Not checkedRandomized trials such as NORVIT and HOPE-2 lowered homocysteine but did not consistently reduce heart attacks, cardiovascular deaths, or total vascular events; HOPE-2 reported fewer strokes and NORVIT hinted at possible harm with the three-vitamin combination.View evidenceHide evidence

As statedabout 27 percent homocysteine reduction in NORVIT

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 7 of 8Not checkedA Cochrane review of more than 71,000 participants found no meaningful benefit for coronary outcomes.View evidenceHide evidence

As statedmore than 71,000 participants

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Claim 8 of 8Not checkedThe article says older adults, vegetarians and vegans, post-bariatric surgery patients, dialysis patients, and pregnant people are among groups highlighted as higher risk or needing monitoring for B12 deficiency.View evidenceHide evidence

Not checked

A source study was identified, but the evidence comparison for this claim was not completed. No verdict has been assigned.

Finally, the search trail

Method layer

NewsLink found the paper. Tessa takes you deeper.

NewsLink checks the story. Tessa is where you inspect the paper, authors, evidence, and research context.

Open the paper in Tessa

Vitamin B12 and cardiovascular health: mechanisms, clinical evidence, and future directions

Nutrition Journal · 2026

Source record (opens in a new tab)

Why this one

Near certain

NewsLink found the paper. Tessa is where you inspect it deeply.

Papers considered

The selected paper, plus nearby candidates.

Crossref, PubMed, Europe PMC · 16 candidate papers

Selected

Vitamin B12 and cardiovascular health: mechanisms, clinical evidence, and future directions

Nutrition Journal · 2026 · Crossref

Source (opens in a new tab)
Candidate

The role of Homocysteine, Folic Acid, Vitamin B6, Vitamin B12 in development of coronary heart disease in Lebanon. (c1999)

Crossref

Source (opens in a new tab)

And 10 more candidates considered.