I just brewed up a clone of Terrapin Rye Pale Ale from Athens, Georgia. In talking about the recipe with my friend, he told me that he thought he had read somewhere that rye is the only grain that if mishandled or brewed wrong could cause physical harm. The buzzword that he used which is running through my mind is that it could potentially make you go "blind". While I do love beer, I don't think I'm ready to sacrifice my eyesight for its enjoyment. If anyone has any info on this, it would be greatly appreciated.