A common vitamin that many people already know may one day help doctors fight some of the hardest-to-treat blood cancers.
Researchers from the University of Minnesota have discovered that vitamin B3, also called nicotinamide, can make the body’s natural killer cells much stronger. Their findings, published in the journal Science Translational Medicine, suggest that this simple vitamin could improve a type of cancer treatment that uses the body’s own immune system to attack cancer.
Cancer develops when damaged cells grow out of control. Normally, the immune system can find and destroy many abnormal cells before they become a serious problem.
One of the immune system’s most important defenders is the natural killer cell. These special white blood cells constantly move around the body searching for infected, damaged, or cancerous cells. Once they find a dangerous cell, they quickly destroy it.
Because natural killer cells already have this natural ability, scientists have spent years trying to use them as a cancer treatment. This type of treatment belongs to a growing area called immunotherapy, which helps the immune system fight disease instead of attacking cancer only with chemotherapy or radiation.
Natural killer cell therapy has shown promise for blood cancers such as leukemia and lymphoma. However, the treatment has not always worked as well as doctors hoped. In some patients, especially those whose cancer returned after other treatments, the killer cells became weak, lost energy, or did not survive long enough to remove all of the cancer cells.
The research team wanted to find a safe and simple way to make these important immune cells stronger. They turned to vitamin B3, a nutrient that helps the body convert food into energy and supports healthy cells.
Vitamin B3 has been used safely for many years and is found naturally in foods such as meat, fish, peanuts, mushrooms, and whole grains. It is also added to many fortified foods because it is essential for good health.
In laboratory experiments, the scientists treated natural killer cells with nicotinamide before using them against cancer.
The results were impressive. The vitamin-treated cells survived longer, produced more energy, resisted damage, and became much better at finding and destroying cancer cells. These stronger immune cells appeared better prepared to keep fighting after entering the body.
The researchers then combined the improved natural killer cells with another cancer medicine and tested the treatment in 30 patients. The early results were encouraging.
Among 19 patients with a difficult form of lymphoma, 11 had no signs of cancer after treatment, while another three patients experienced a partial response. These improvements were seen within only 28 days.
The study also helps explain why vitamin B3 had such a positive effect. Instead of acting directly against the cancer, the vitamin supported the immune cells themselves. By protecting them from stress and helping them produce more energy, the vitamin allowed the cells to continue doing their natural job more effectively.
Vitamin B3 has an interesting history. In the 1930s, scientists discovered that too little vitamin B3 caused pellagra, a serious disease that led to skin problems, diarrhea, confusion, and dementia.
After foods were fortified with the vitamin, pellagra became much less common in many countries. Now researchers are discovering that this familiar nutrient may have another valuable medical use.
Although these findings are exciting, the treatment is still being studied. The trial involved only a small number of patients, so larger clinical studies are needed to confirm that the treatment is safe and effective. If future studies produce similar results, vitamin B3-enhanced natural killer cells could become a valuable new option for people whose blood cancers are difficult to treat.
The discovery also highlights how nutrition and medicine can sometimes work together in unexpected ways. A vitamin that has been known for decades may help improve one of the newest forms of cancer treatment. Researchers hope this approach will eventually give doctors another powerful tool to help patients live longer and healthier lives.
If you care about cancer, please read studies that a low-carb diet could increase overall cancer risk, and vitamin D supplements could strongly reduce cancer death.
For more information about health, please see recent studies about how drinking milk affects the risks of heart disease and cancer and results showing higher intake of dairy foods linked to higher prostate cancer risk.
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