DEAR ABBY: I had an affair years ago, and I recently confessed to my spouse that our child isn't his. Things are really bad now between the two of us, and I don't think we are going to make it. My question is, do I tell my child the truth? -- IMPERFECT MOM IN CALIFORNIA
DEAR IMPERFECT: At some point your child will need to know his or her entire medical history. He or she may also wish to meet the biological father. If your child is young, the news can wait. But if he or she is nearing adulthood, that information could be important in case there are diseases that run in the father's family -- diabetes, heart disease, cancer and Alzheimer's among them.