dread
Bluelighter
I disagree. Didn't primitive man eat raw mushrooms as part of their diet all the time?
I believe the reason for the nausea are the alkaloids which if I'm not mistaken act as defense mechanisms against mammals.
Alkaloids are part of the reason, but the fact is raw mushroom material is not suitable for human digestive system. We cannot process them.
Try cooking your mushrooms (lightly) on a frying pan and see if you get as much nausea.

