PSYCHEALTH.ORG

across the lifespan, affecting the neuroanatomy and neurochemistry of the developing brain. Sometimes genetic factors are the main causes of mental illness. Sometimes learned behavior predominates. Both usually are involved... The experiences that result from nature and nurture interacting are saved as both conscious memories and unconscious habits, some of which may cause defensiveness and other problematic behaviors for which people seek help... Correcting problems that result from biology, difficult life experiences, or both may require psychiatric medication, individual psychotherapy, couples therapy, family therapy, social changes, or a combination of some or all of these.