1.Cherry Pits
The hard stone in the center of cherries is full of prussic acid, also known as cyanide, which is poisonous. But there’s no need to freak out if you accidentally swallow one — intact pits just pass through your system and out the other end. Avoid crunching or crushing pits as you nosh on your cherries.
2.Apple Seeds
Apple seeds also have cyanide, so throwing back a handful as a snack isn’t smart. Luckily, apple seeds have a protective coating that keeps the cyanide from entering your system if you accidentally eat them. But it’s good to be cautious. Even in small doses, cyanide can cause rapid breathing, seizures, and possibly death.
