Congrats on the adoption! It sounds like you have fallen deeply in love with your new baby, and I am sure that you will have a wonderful and rewarding experience in raising your child, regardless od the biological parent's mental health issues. Now, that being said, I want you to understand and recognize how very lucky you are to KNOW in advance about the bio parents health and mental health issues. There are so many times when a child is adopted and there is not enough info about the bio parents history, or the info is not correct. Information is your freind here. Your son MAY be more genetically predisposed to certain things because of his bio parents, but what if you didn't have their mental health info? What if they were never diagnosed or had been incorrectly diagnosed? You would have no more info. than most people starting out, and would have to base your "fears and concerns" on what most parents have to base their on. Time. I am sure that with all of your love and attention, being in a stable, loving and nuturing home, and having the medical care needed from the start your son will be just fine. Even if he does end up being diagnosed as bipolar, which he may not be. I have custody of my 8 yr old niece, and she has pediatric bipolar disorder. I fought the diagnoses for YEARS, because I just didn't want to admit that it was actually the issue. With children, the pattern can go in waves of a few months of really good behavior, and then a few months of difficult behavior. (nothing horrible here, just defiance which was NOT age appropriate) The pattern can be as I said months at a go, or even weeks or days. It depends on her and she can "switch" without warning. I finally agreed to accept her diagnoses and allow the doctors to give her low dose meds to help her with mood stabalization when her behavior was becoming an issue at school and with her peers. (she really wanted to act "normal" and make some friends.) I am happy to report that she has been on these very low dose meds for a little over a year, and has had no behavior issues at school, and is quite popular with her classmates now. She has always been on the principals list with her grades because she is so smart, (gets all A's)We have had just as many challenges in dealing with our other kids medical issues as we have with our niece's bipolar. It is a medical problem, just like if she had allergies, so as far as others opinions of it I really don't discuss it with people who are not important in her life. (teachers, doctors, etc) It is a disease, and it does come with a certain stigma still, but so does adhd, and society is coming around on that one. I really think you need to relax and not worry so much about this with your son. You love him, and can't change his family connections, and honestly whatever happens will happen. Just give him the best start that you can. We didn't get my niece until she was 2 1/2 and some outside damage had been done as well. I really wish you and your son the best!