2. Cherries
Who doesn’t love cherries? Well, some people probably don’t care for them, but for those that do, it’s important to avoid eating the pits. They are extremely hard and are more likely to break the teeth of people that try to crack them by biting on them, so what’s the problem then? It’s the inside of the pit, which can contain a substance that turns into cyanide when it’s crushed. The same is true for peaches, apricots, and plums. The key is to avoid eating any pits that have been broken open. Swallowing a cherry pit whole will probably not cause any problems at all, so don’t worry too much if you do that accidentally.