Marriage between blood relatives common in TamilnaduMarriage between blood relatives is a very common culture followed in Tamilnadu. Though the people have developed in computers, industries, etc. we can see that many families seek a bride or a groom within their families that too very close relatives.
Though many awareness programs have created they still practice this till now. Many of the genetically inherited diseases and disorders such as color blindness, hemophilia, Diabetes mellitus, atherosclerosis, cancer will affect the next generation when they marry within close blood relatives.
Still people think that "A known devil is better than an unknown angel"
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