7. Cashews
We often snack on nuts in between our meals. We all know it how fun it is to watch TV while munching on walnuts, pistachios or hazelnuts. Be careful if you are offered cashews. These nuts are actually seeds. They are not dangerous if they are eaten cooked. But raw cashews contain urushiol, a strong toxin if it is consumed with food. To avoid any kind of negative reaction, cook, roast or steam your cashews. The heat will neutralize the toxin.