Subscribe Now/Learn More
PsychiatryOnline subscription options offer access to the
DSM-5 library, books,
journals, CME, and patient resources. This all-in-one virtual library provides psychiatrists
and mental health professionals with key resources for diagnosis, treatment, research,
and professional development.
Need more help? PsychiatryOnline Customer Service may be reached by emailing PsychiatryOnline@psych.org
or by calling 800-368-5777 (in the U.S.) or 703-907-7322 (outside the U.S.).
Family, twin, linkage, and association studies support
a strong role for genetic liability with respect to risk for depression.
Mood disorders are complex (as opposed to Mendelian
or single-gene) genetic diseases involving multiple and variably
penetrant genes with individually variable modes of inheritance.
Interactions between individual genes and the environment
are likely to play an important role in the etiology of unipolar
depression and bipolar disorder.
Genetic influences on both resilience and risk for
the development of mood disorders are developing areas of investigation in