WOW. If you are at all interested in what reishi (aka ganoderma lucidum - a mushroom) can do for you, this is the book to buy. I was MORE than impressed with the thoroughness of the information and the documentation. Willard has given us all food for thought - this incredible herb has been known of by Chinese herbal medicos for centuries and it's the blindness of Western Medicine that has keept us in the dark about its miraculous healing properties. (yes, puns intentional!) Read it, learn, and grow healthy!