Hi there, thanks for asking. The prevalence of schizophrenia
is about one percent in the general population. If somebody has a parent who has schizophrenia the chance would be about 8 percent. If somebody has just one uncle who has schizophrenia the chance would be just slightly more than one percent. It means there is no reason to worry and as long as you keep the stress
level low and he is taking a good nurturing, you can be sure that he will have a high level of mental health. I wish a good health for you and the family.