A powerful investigation into dating when the genetic odds are against you. Krithika Varagur talks to couples in Nigeria, the sickle cell capital of the world. (Its residents account for about half of all new annual cases of severe hemoglobin disorders worldwide.) The moving case studies show the true struggle of weighing risk against attachment.
From the beginning, Nkechi knew that she and Subomi had “no business dating.” His genotype was SS: he had two abnormal S genes for hemoglobin, the oxygen- carrying protein in his blood. Nkechi’s genotype was AS: she had one abnormal S gene and one normal A gene. Like an estimated quarter of all Nigerians, she was a silent carrier. There was a 50 percent chance that any child they had would suffer from sickle cell disease like their father. This was no light prospect. Subomi’s own childhood had been marred by secrecy and shame over his condition. Nkechi, meanwhile, had lost four cousins to the disease. Those deaths might be understood as products of an earlier, benighted time, when the average Nigerian knew far less about genetic testing and disease management. Today, however, there was a growing consensus— particularly in their college- educated, upper- middle- class milieu—when it came to passing on two sickle cell genes: don’t risk it.
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