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What are the most common genetic disorders?

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Some of the most common genetic disorders are cystic fibrosis, severe combined immunodeficiency disorder and Huntington's disease, according to Positive Med. Other genetic disorders are Jackson-Weiss syndrome, Fragile X syndrome and Tay Sach's disease.

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Cystic fibrosis is a genetic disorder that damages the lungs and digestive system, states Mayo Clinic. The mucus production cells of people with cystic fibrosis are faulty and produce mucus that is unusually thick instead of thin. The thick mucus blocks the tubes and passage ways of the lungs and pancreas of people with this disorder. Symptoms of this disease vary depending on severity, but respiratory symptoms of cystic fibrosis are wheezing, difficulty breathing and chronic lung infections, while digestive symptoms include insufficient weight gain and growth, constipation and blockage in the intestines. Screening for this disease allows the diagnosis to occur within the first month of a child's life, before symptoms even begin.

Huntington's disease is a genetic disorder that causes the nerve cells in the brain to break down, explains Mayo Clinic. Movement symptoms include involuntary movement, muscle problems and abnormal eye movements. Other movement symptoms are difficulty speaking or swallowing and problems with balance. Cognitive symptoms include difficulty processing thoughts and words and an inability to learn new information.

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