[3] Another independent research study also finds that the...

[3] Another independent research study also finds that the publicised harmful effects against first-cousin marriage are over-exaggerated. [4] There are, however, several campaigns, worldwide, to ban first-cousin marriages, e.g., a Conservative former minister has called for first-cousin marriage to be banned in the UK. [5] Looking back at human history, one sometimes wonders, how the human race started after Qabeel (Cain) killed Habeel -as (Abel)?

Generally, both Christian and Sunni Muslims believe that initially a brother married his own sister to propagate the human race, i.e., Cain, the farmer, after killing Abel, settled northeast of Eden, married his sister Awan.