bunu çok sık yapmam

http://en.wikipedia.org/wiki/Bipolar_disorder

Evolutionary
Because bipolar disorder affects an individual’s ability to function in society and has a high morbidity rate, evolutionary theory would suggest that the genes responsible would have been naturally selected against, effectively culling the disorder. Yet there continue to be high rates of bipolar disorder in many populations, suggesting the genes responsible may have an evolutionary benefit.

Proponents of evolutionary medicine hypothesize that the genes that cause severe bipolar disorder when inherited in large doses may increase fitness when inherited in small doses.[56] High rates of bipolar disorder throughout history suggest that the ability to switch between depressive and manic moods conveyed some evolutionary advantage on ancestral humans. Theories put forward to explain the evolutionary advantages of major depressive disorder may also explain the adaptiveness of the depressive episodes of bipolar disorder. For example, in individuals under increased stress, depressive mood may serve as a defensive strategy that causes the individual to retreat from the external stressor, increase sleep, and preserve resources and energy for better times.[57] Additionally, manic moods may convey advantage in some situations. Creativity, confidence, and high energy have all been linked to mania and hypomania

• **

Evolutionary biologists have hypothesized that bipolar disorder could have come from an adaptation to extreme climactic conditions in the northern temperate zone during the Pleistocene. The Evolutionary Origin of Bipolar Disorder (EOBD) hypothesis states that during the short summers of extreme climactic zones, hypomania would be adaptive, allowing the completion of many tasks necessary for survival within a short period of time. During long winters the lethargy, hypersomnia, lack of interest in social activities, and overeating of depression would be adaptive to group cohesion and survival

• **

Evidence for the EOBD hypothesis include an association between bipolar disorder and a cold-adapted build, correlation between seasonality and mood changes in those with bipolar disorder, and low rates of bipolar disorder in African Americans.

kış geldi

reset dönemi

tak gibi hissediyorum