In addition to the prenatal techniques, newborn screenings have provided well over 2,000 newborns the opportunity for typical development. These screenings can prevent phenylketonuria (PKU), congenital hypothyroidism, Rh disease, and other abnormalities. PKU occurs in approximately 1 of every 14,000 births in the United States. PKU is a genetic disorder that causes difficulty for the body in breaking down the common food chemical, phyenylalanine. When phyenylalanine, an amino acid, builds up it can cause serious health and learning problems. Other preventive measures used to prevent mental retardation include reducing the presence of lead in the environment, using helmets and child safety seats, and educating people about the importance of using safety equipment. In addition, ensuring proper prenatal care for all pregnant women and seeking genetic counseling if there is history of birth defects will help prevent MR.
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