While food may sometimes appear mold-free at first glance, it’s not uncommon for mold to grow deep under the surface of your food, potentially leading to accidental ingestion.

In general, most people will be fine after eating a little mold. However, many varieties of mold can cause various side effects, and some can even lead to serious health issues.

According to the Cleveland Clinic, ingesting mold can sometimes cause allergic reactions and symptoms such as respiratory issues and gastrointestinal distress.

The U.S. Department of Agriculture explains, “A few molds, in the right conditions, produce ‘mycotoxins,’ poisonous substances that can make you sick.”

It’s also impossible to tell if mold is dangerous just by looking at it, so if you find some fuzzy spots on your food, it may be best to throw it out, depending on what it is.

Some foods are made with mold and are perfectly safe to eat. However, if you’ve already consumed mold and have begun feeling unwell, consider contacting Poison Control or a doctor.