Explain to your aunt and the other people in your family that you mean no disrespect to any of them but you do not know any of the medical problems on your father's side. When you fill out medical histories all your life, they will be incomplete for that reason. There can be situations where parental DNA can influence important issues in having children and in the future, who knows what cures DNA may bring about for people that have that information.
As if that's not enough, there's the simple moral issue that everybody has a right to know where they came from, good or bad. To keep that information from you is a selfish act. This isn't about their lives, it's about yours.
Don't let them off the hook. Bring it up every chance you get with every one of them that might have information. Feel free to print this and give a copy to each one of them if you want.
Answered Jul 02, 2010
Edited Jul 02, 2010