Scientists are raising new questions about vitamin B12 and cancer
Recent research has raised questions about the relationship between vitamin B12 and cancer. While B12 is essential for health, both low and high levels may be linked to increased cancer risk. The complexity of B12's role in cell growth and cancer development highlights the need for balance in nutrient intake.
- ▪Vitamin B12 is crucial for producing red blood cells and repairing DNA.
- ▪Studies suggest both low and high B12 levels may increase cancer risk, indicating a U-shaped relationship.
- ▪High levels of B12 in cancer patients may be an effect of the disease rather than a cause.
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| Original publisher | ScienceDaily |
| Canonical URL | https://www.sciencedaily.com/releases/2026/05/260526022009.htm |
| Publication time | Wed, 27 May 2026 00:52:06 EDT |
| Retrieval time | 2026-05-27T05:07:56.817Z |
| Last seen | 2026-05-27T05:07:56.817Z |
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Science News from research organizations Scientists are raising new questions about vitamin B12 and cancer Date: May 27, 2026 Source: The Conversation Summary: Vitamin B12 has long been seen as a health hero, helping the body make red blood cells, repair DNA, and keep nerves functioning properly. But scientists are discovering that the story may be more complicated than simply “more is better.” While too little B12 can damage DNA and raise cancer risk, some studies suggest that extremely high levels — especially from long-term high-dose supplements — may also be linked to certain cancers or poorer outcomes in cancer patients. Share: Facebook Twitter Pinterest LinkedIN Email FULL STORY Vitamin B12 may be vital for health, but when it comes to supplements, more isn’t always better.
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