全世界每年大约有一百万17岁以下少女有意无意怀孕。北欧的荷兰、瑞典等几乎没有少女无意怀孕现象。相比之下美国的性教育、避孕措施等问题丛生。巴西等拉丁美洲国家缺少避孕措施。亚洲的一些发展中国家根本不把青少年怀孕看作异常现象，这些国家有早婚早育的传统，从童年到成 Every year, about one million young girls under the age of 17 in the world intend to conceive each year intentionally or unintentionally. There are few unintentional pregnancies in the Nordic countries such as the Netherlands and Sweden. In contrast, the United States, sex education, contraception and other issues clues. Brazil and other Latin American countries lack of contraception. Some developing countries in Asia do not regard adolescent pregnancy as an anomaly at all. These countries have a tradition of early marriage and early childbearing. From childhood to age