Is my son in danger of mental health issues with loss of his father?

I have a teenage son that I'm concerned about. His father has struggled with mental illness and recently gave In and He took his life. I know he was abused as a child and was diagnosed with BPD in his late teens. He had attempted suicide many times before. While this is a horrible loss and we are overwhelmed with grief, My concern now is for my teen son. Should I worry about history repeating?? What can I do to make sure this traumatic event doesn't cause my teen to develop mental illness himself?? Is he in danger of mental health issues or does this kind of thing develop because if a persons upbringing?? Any help or discussion would be appreciated.