I'll summarize the list here and you can read the full article on io9.
- Egg whites
- Whole wheat and rye bread
- Kidney beans
- Almonds, cherries, apples, apricots, and many other seeds
- Every green thing you've ever eaten
- Castor Beans
I'm not really sure what to take away from this list, but it was interesting. These foods are both nutritious and deadly. Hmmm, what do you think?