ah! i have followers now! two of my girlfriends, pink and cocoa! ah, such joy. well, since i haven't posted in a while, i better make it interesting. poison ivy is related to mangoes, cashews, and pistachios. mango stems and cashew shells sometimes cause an allergic reaction like poison ivy. also, seven out of ten people are allergic to poison ivy. the other three could tromp through a field of the stuff unscathed. this could change at any time, though, so stay clear of it anyway!cashews are poisonous when they're raw-you have to boil them-and the steam from cooking them can make you go blind. cashew oil is sometimes used to make insulation for jet planes, so some people are allergic to it. no part of pistachio plants is poisonous, though.