I am allergic to sunflower seeds. It causes me to get very lightheaded, severe stomach cramps, and diarhea. Also, if I take them in low doses, such as eating one seed at a time, I feel drunk. Might sound nice, but it also causes a wicked "hangover" with the above symptoms.
The worst part is, damn near everything has sunflowers in some form in it. You would be surprised to learn how much stuff contains sunflower oil. Oh and when I look at the ingredients list, it often times says "May or may not contain sunflower oil". WTF is that? Does it, or doesn't it contain sunflowers?