Himalayan aphrodisiac

A friend sent me this article about the yarsagumba, that is more expensive than gold. Crazy!
Read the article here.
I wonder how they came up with the idea to start eating it in the first place, about 5000 years ago.
This is the most expensive, Grade A, yarsagumba. Strange little caterpillar-fungus thing.
I have contacts if someone is interested.