Did you know that food can be harmful to certain people? That’s because they have food allergies. Food allergies can be dangerous if they cause anaphylaxis. This is the body’s reaction to the food, which can be so severe that it may become difficult to breathe. It can also cause a person to faint. Scientists wanted to figure out if they could use a tiny piece of a peanut protein that is expressed by messenger RNA (mRNA) to reduce the harmful symptoms caused by this food. They designed a very tiny particle to deliver this mRNA to the liver. They designed it to switch off allergic responses. The researchers then collected data to determine if there were fewer symptoms of anaphylaxis. Their tests showed that mRNA-carrying particles could reduce the impact of peanut allergies. That means that mRNA could be an effective solution to allergies in the future.