Sickle cell disease (SCD) is a genetic disorder that is caused by the mutation of the gene that encodes the hemoglobin molecule. This mutation results in the production of an abnormal form of hemoglobin, known as hemoglobin S or HbS. The abnormal HbS molecules cause red blood cells to become sickle-shaped, which can lead to a variety of health complications.
The main cause of sickle cell disease is a mutation in the hemoglobin gene. This mutation results in the production of an abnormal form of hemoglobin, known as hemoglobin S or HbS. The abnormal HbS molecules cause red blood cells to become sickle-shaped, which can lead to a variety of health complications.
The mutation in the hemoglobin gene is inherited from a person's parents. This means that if one or both parents have the mutation, there is a 50% chance of a child being born with the disease. The mutation is most common in people of African, Caribbean, Middle Eastern, and Asian descent.
In addition to the genetic mutation, sickle cell disease can be caused by environmental factors, such as infections or dehydration. Infections can cause the body to produce more HbS molecules, leading to an increase in sickle-shaped red blood cells. Dehydration can also cause red blood cells to become sickle-shaped, as the lack of water makes them more prone to deformation.
In summary, the main cause of sickle cell disease is a mutation in the hemoglobin gene that is inherited from a person's parents. This mutation results in the production of an abnormal form of hemoglobin, known as hemoglobin S or HbS, which causes red blood cells to become sickle-shaped. Environmental factors, such as infections and dehydration, can also contribute to the development of sickle cell disease.