The Claim
Each 100 pmol/L increase in serum vitamin B12 concentration is associated with a 4% higher risk of all-cause mortality in the general population and a 6% higher risk in older adults, suggesting that elevated vitamin B12 levels may serve as a marker of increased mortality risk.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
People with higher levels of vitamin B12 in their blood tend to have a slightly higher chance of dying from any cause — especially older adults — so high B12 might just be a sign that something else is wrong in the body.
See the scientific wording
Each 100 pmol/L increase in serum vitamin B12 concentration is associated with a 4% higher risk of all-cause mortality in the general population and a 6% higher risk in older adults, suggesting elevated vitamin B12 levels may be a marker of increased mortality risk.
What the research says
1 studyThis study found that people with higher levels of vitamin B12 in their blood were more likely to die from any cause, especially older adults — just like the claim says. It doesn’t say B12 causes death, but that high levels might signal other health problems.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.