Mycobacterium vaccae

Mm-hmm.

For example, there's a mycobacterium, it's a little bacteria that lives in the soil, vacca, V-A-C-C-A-E. It's actually related to tuberculosis bacteria, just as an aside.

But this little bacteria, it lives in the soil, and we now know that when it gets into our systems, it actually, it stimulates our immune system, and it can even lead to heightened serotonin.

It helps cancer.