Axe, a website that believes “food is medicine,” gives the explanation that “diatomaceous earth is used to kill parasites and viruses that can contribute to illnesses while also helping to clean the blood.” While this may be true in the form of Natural Diatomaceous Earth in animal feed additives, Dicalite Management ...
It is awesome in the garden for killing various pests. In the rare cases I had fleas on my animals, it was a good "dust" for rugs and them. Now they say it can help people too.
I dunno, I know it works great as a pool filter.