Incest is caused by sexual abuse between parent and child, or between siblings. It is an unhealthy attraction between family members.
None.
Not 100%, but statisically yes.Inbreeding between close family relatives can cause lots of major health problems for any child being born.
No, incest does not cause HIV or AIDS. It may, however, cause a person to go to jail.
Incest can cause birth defects because the partners share some of the same genes. This allows for recessive traits to show up and also adds to the possiblity of major inheritable diseases to show up.