The Claim

Based on current evidence, there is no clear association between serum vitamin B12 levels and cancer-specific mortality.

Source: The origin of vitamin B12 levels and risk of all-cause, cardiovascular and cancer specific mortality: A systematic review and dose-response meta-analysis.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
48score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Right now, scientists haven’t found a clear link between how much vitamin B12 is in your blood and whether you’re more or less likely to die from cancer.

See the scientific wording

There is no clear association between serum vitamin B12 levels and cancer-specific mortality based on current evidence.

What the research says

1 study

  1. Study: The origin of vitamin B12 levels and risk of all-cause, cardiovascular and cancer specific mortality: A systematic review and dose-response meta-analysis.

    This study looked at whether high vitamin B12 levels in the blood are linked to dying from cancer, and found no clear connection — meaning high B12 doesn’t seem to make cancer deaths more or less likely.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.