From the blog

Vitamins Can Affect How Well Immunotherapy Works

Published: November 6, 2026

Mesothelioma treatment is an intricate field where even the tiniest factors can play a huge role. Recently, scientists discovered something unexpected: a connection between vitamin B12 and how well certain cancer treatments work. Cancer treatments that boost the immune system, often called immunotherapy, are great ways to treat hard to treat cancers. These treatments work by helping the body’s immune system fight cancer. There was a problem though. Researchers found that when people had too much vitamin B12 in their blood while getting this treatment, it didn’t work as well.

Normally, vitamin B12 keeps our body healthy by supporting nerve and blood cells, but when there is too much, it might interfere with the special immune-boosting treatments for cancer. In a study looking at people with advanced cancer, researchers checked their vitamin B12 levels while they received different cancer treatments. They found that those who had too much B12 didn’t respond as well to the immune-boosting treatment compared to others.

The researchers believe that having too much of this vitamin might confuse the body’s immune system, making it harder for the cancer treatment to do its job. The study looked at many factors in the patients’ blood and found that high vitamin B12 levels were linked to not-so-great outcomes for those getting immune-boosting treatments. This then suggested that vitamin B12 might affect how well different treatments work. Scientists believe this might happen because vitamin B12 can influence how our immune system works. When there is too much of it, it might throw things off balance, making it harder for the immune-boosting treatment to fight cancer cells.

This study on vitamins and immunotherapy is exciting because now scientists can explore more about how vitamins and the immune system work together in fighting cancer. They want to figure out ways to help these treatments work better, even when vitamin B12 levels are high. Researchers want to learn more about how vitamin B12 interacts with our immune system and the microbiome. By understanding this better, they hope to find ways to make these treatments more effective, even when vitamin B12 levels are too high.

This discovery will help guide researchers in future studies. It shows them a new path to explore in the fight against cancer. This could even be a step closer to making cancer treatments better for everyone. This discovery could help researchers treat hard to treat cancers and could eventually improve all types of cancer care.

Source:
Ilit Turgeman et al., “Too Much of a Good Thing: The Association of Elevated Vitamin B12 Levels and Outcomes in Patients With Cancer Treated With Immunotherapy” Journal of Immunotherapy (May 2024). [Link]
Contact Us
CONTACT INFORMATION
DIAGNOSIS
Have you received a diagnosis? *
reCAPTCHA

Skip to content