A new group is struggling for acceptance. The group is people who are married to their cousins. These people note that 20 percent of marriages around the world are between first cousins, that Albert Einstein and Charles Darwin married their first cousins, and that first-cousin marriage, while prohibited in half the United States, is legal in Canada and throughout Europe.
Now a study by the National Society of Genetic Counselors says that having a child with your first cousin raises the risk of a significant birth defect from about 3-to-4 percent to about 4-to-7 percent. According to the authors, that difference isn’t big enough to justify genetic testing of cousin couples, much less bans on cousin marriage. From this, the media have concluded that marrying your first cousin is “OK.” Is it?
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