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Sickle cell is a genetic blood condition that can cause severe pain, extreme tiredness and serious health complications. It mainly affects people of African and Caribbean heritage, and for many, it's something they've had to live with their whole lives.
But that could be changing.
We meet Daniel Cressy, a young man from Louisiana whose dream is to become a pilot. After years of living with sickle cell, he received a groundbreaking treatment that has effectively cured him. He shares what life was like before and what it's like now to be sickle cell free.