The Claim
Elevated vitamin B12 levels above 1000 pg/L are associated with a higher risk of cancer, with risk ratios ranging from 1.88 to 5.9, particularly for lung, pancreatic, liver cancers, and myeloid-lineage hematological neoplasms.
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 very high levels of vitamin B12 in their blood (above 1000 pg/L) seem to have a higher chance of getting certain cancers, like lung, pancreatic, liver, or blood cancers, based on studies that found their risk was nearly twice to almost six times higher.
See the scientific wording
Elevated vitamin B12 levels above 1000 pg/L are associated with a higher risk of cancer, with risk ratios ranging from 1.88 to 5.9, particularly for lung, pancreatic, liver cancers, and myeloid-lineage hematological neoplasms.
What the research says
1 studyStudy: Elevated Vitamin B12, Risk of Cancer, and Mortality: A Systematic Review
This study found that people with very high levels of vitamin B12 (over 1000 pg/L) are more likely to have certain cancers, like lung or pancreatic cancer, which matches what the claim says. It doesn’t prove the vitamin causes cancer, but it strongly suggests a link worth checking out.
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.