The mechanism at work is that vitamin B12 promotes mitochondrial health.
Researchers used roundworms, a simple 1-inch long organism to perform the research. While this may seem strange, roundworms are often the first stop in this type of research precisely because of their simplicity.
They also share a very important trait with humans: They cannot make their own B12 - it must come completely from their diet.
The worms were divided into two populations. One had sufficient B12 in their diet, the other did not.
The researchers found that the deficient population was not resistant to a pathogen called Pseudomonas aeruginosa which is a disease that infects about 51,000 people per year according to the CDC.
The take away from this study is that vitamin B12 is a key factor in mitochondrial health, and being deficient puts us at risk for infection.
10% of the US population is deficient in the vitamin, a number that increases with age.
If you are looking to boost your intake, you might want to check out our best-selling product B-Strong. We formulated it with these exact issues in mind.