Bipolar Disorder and Twins

Paper Summary:

Research has recently indicated that there are multiple genetic pathways leading to the development of bipolar disorder. This paper presents a detailed examination of the incidence of bipolar disorder among identical twins. The author explores bipolar disorder's genetic components and then explores whether or not identical twins have a higher incidence of the disorder than the general population.

From the Paper:

"The understanding that mental illness, including bipolar disorder, is genetically based has created curiosity about where the biology is involved. One of the things that have been examined is whether or not identical twins have a higher incidence of the disorder. It is an interesting question because of the fact that identical twins have identical DNA. If a higher incidence or a correlation can be found between identical twins and bipolar disorder, it will be further evidence of the biological basis for the disorder as well as a closer look as to its biological origin being before birth, and not something that happens after birth(Taylor, 2003)."

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