Twins and Allergies: A Complex Connection

Twins often share many things, including allergies. Allergies happen when the body reacts badly to harmless things like pollen or food. Twins are more likely to have the same allergies because they share genes and often grow up in the same place.

However, twins don't always have the same allergies. Many things can affect who gets allergies. These include where you live, what you eat, and if you have pets. Even identical twins might have different allergies if they grow up in different places.

Scientists are still learning about allergies. They hope to find out more about why some people get allergies and others don't.