Stevenson was sentenced to four years in prison for managing prostitutes and assault, but was released after 20 months. S tevenson was enraged by the La Presse story, though I have yet to find a press account in which he actually denied the details.
Genetic mutation. PKU is caused by a genetic mutation (change to the DNA) in the human phenylalanine hydroxylase (PAH) gene. There are many different types of mutations that can affect the PAH gene, all of which result in the body not producing a functioning PAH enzyme.
Phenylketonuria is an inherited disorder. About one in every 15,000 infants born in the United States has PKU. People who are born with PKU are normal in every way except to stay healthy they must follow a strict diet which limits phenylalanine, a common part of most food. People with PKU have an inactive liver enzyme.henylketonuria is an inherited disorder. About one in every 15,000 infants born in the United States has PKU. People who are born with PKU are normal in every way except to stay healthy they must follow a strict diet which limits phenylalanine, a common part of most food. People with PKU have an inactive liver enzyme.