Paul Stamets (host defence) on the use of mycelium on grain.

Most of what I learnt about the quality of various mushroom extracts has been from things posted on this sub, which we all know is a bit of an echo chamber. I naively believed that whole fruiting bodies extracts are superior to mycelium on grain extracts, and assumed that Paul Stamets was pretty silent about why he uses supposedly inferior methods for making these supplements, but then I stumbled across the following blog on his website which brings up the issue:

https://fungi.com/blogs/articles/benefits-of-mycelium

"Testing verified both the mycelium and the cultured rice substrate as immunologically active.\ Furthermore, the mycelium and the cultured rice substrate are active in different ways, each conferring unique and complimentary immune benefits.\"

"Some vendors in the mushroom supplement space deceptively argue that mycelium grown on a grain substrate is not useful for consumers and that only mushroom fruitbodies are valuable in supporting health. These claims contradict hundreds of articles published in the scientific literature demonstrating the health-enhancing value of mushroom mycelium grown on grain substr…