no kerrie if u have a girl and she dosent have pku then she dosent have to go on diet,later in life she can test to see if her husbadn has the gene and if he does then there kids WILL have PKU and will follow a diet when there are born, though precussions can be taken ahead of time if they do know if her baby will have pku. but no she wont need to follow a diet unless she acutally has pku. nanyways hope that helps. gald to see u checked out my site. i have to go now , im a work and we are closing. hopefully TTYL!