@Merry Andrew,
But that would put that great shaman out of business. I am never sure of anything that we can't be sure of, but I've lived a good long life by being unorthodox and I've escaped a lot of miserable things in the process. I may die younger than necessary, but......oh well. For now it's all good.
Disclaimer: I absolutely 100% do not necessarily recommend my choices to anybody else. And if I had any symptoms of any kind that were alarming to me, I would definitely see a doctor immediately. And I think regular check ups are a good thing to do.