And, I rationalize, I was the only one who had depression, or any other mental illness, in my entire family, on both sides, as far back as anyone can remember. Maybe my depression has been more nurture than nature, due to losses early in my life. Even if it turns out that he does have a mental illness, I know that I'll be able to help him to get the best treatment. If I've passed on faulty genes, I can also pass on to him everything I've learned about dealing with the fallout from them.

