People who live on islands, even if they are far away from other people, have a chance of getting special diseases.
These diseases are passed down through families, and they are more common on islands because everyone is related in some way.
For example, people who live on the Faroe Islands have a lot of a sickness that makes it hard for their bodies to use fat.
Other islands have other special diseases, and it is important to know about them so that people can stay healthy.
