BEHAVIORAL AND MENTAL DISORDERS
GENETICS, ADOPTION AND MENTAL HEALTH DISORDERS
Schizophrenia and Adoption
Numerous adoption studies support current hypotheses of a genetic basis for schizophrenia. Adopted-away children of schizophrenic mothers have three- to fourfold risk of developing schizophrenia compared with adopted-away children of mothers without this diagnosis. The risks of disease expression are increased if the adoptive home is unstable. Mental illness is more common among biologic relatives of schizophrenic adoptees. The inheritability of schizophrenia may be as high as approximately 70%.
From THE HANDBOOK OF INTERNATIONAL ADOPTION MEDICINE by Laurie C. Miller. © 2004 by Oxford University Press, Inc. Used by Permission.