The Claim

Elevated vitamin B12 levels are consistently associated with a lower risk of breast cancer.

Source: Elevated Vitamin B12, Risk of Cancer, and Mortality: A Systematic Review

What the research says

Challenges is higher

Challenge is ahead, but a single strong supporting study can change this.

Supports
0score
Challenges
28score

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

People with higher levels of vitamin B12 in their blood tend to get breast cancer less often than those with lower levels.

See the scientific wording

Elevated vitamin B12 levels are consistently associated with a lower risk of breast cancer.

What the research says

1 study

  1. Study: Elevated Vitamin B12, Risk of Cancer, and Mortality: A Systematic Review

    The study found that high vitamin B12 levels aren’t linked to less breast cancer — in fact, they might be a sign of other cancers, so the idea that B12 protects against breast cancer is wrong.

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.