Danish citizenship is granted to anyone who has one parent of Danish citizenship, whether the child is born in or outside of Denmark. Citizens of Greenland and the Faroe islands are considered Danish citizens for all purposes. Those who do not achieve Danish citizenship by birth (or by Adoption) can only receive Danish citizenship through decree of law. Danish citizenship is automatically lost if one applies for foreign citizenship or when a 22 year old child of Danish citizens has never lived in Denmark and has not formally applied for Danish citizenship.