DEAR ABBY: My first marriage ended in divorce 35 years ago because my wife had cheated on me several times. I suspected then that I wasn't my daughter's biological father. Lately I have been wondering about my son, too. Both are in their late 30s now. Obviously, I decided to accept them as my own.
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My son and his daughter both have health problems. My granddaughter's medical problems are very serious, but the doctors aren't sure what she has. A saliva test to determine if he is my biological son might give him or my granddaughter some insight into their medical problems. Should I have this test done? -- QUESTIONING IN THE SOUTH
DEAR QUESTIONING: Because you feel there is the possibility the test might shed light on genetic medical conditions, discuss it with your son and let him decide whether he wants it done. If there is a chance that the health problems affecting him and his daughter are inherited from his paternal bloodline and you turn out not to be his father, he may want to ask his mother who the person is and see if the man would be willing to have genetic testing done.