Many people lose their lives through suicide than from a combination of war and murder globally each year. Majority of individuals committing suicide suffer from moods, disorders or depression. Depression is a devastating disorder characterized by persistent gloom and a variety of distinguished symptoms. The condition has been perceived as a dysfunction but it is much common than other mood conditions, and its prevalence is affected by various factors not only age (Andrews, Bharwani, Lee, Fox, & Thomson, 2015).


  1. A fundamental assumption of the approach to the evolution of depression is that skills and behaviors studied by contemporary psychologists evolved in a very different background. This means that actions that appear to be detrimental to society’s survival today may have been highly adaptive in the recent years, thus increasing the probability of social, survival and reproductive success (Miller & Raison, 2016).
  2. Depression occurs in persons of all genders, backgrounds, and ages.
  3. The ailment has several forms from major depression, dysthymia, minor depression and bipolar disorder.

III. Various illnesses co-exist with depression which includes panic ailment, post-traumatic stress condition, social phobia and general anxiety disorder.

  1. The disease may be coupled with other serious medical illnesses such as the stroke condition, HIV/AIDS, cardiovascular ailments diabetes and Parkinson’s disorder (Runnova, Zhuravlev, Khramova, & Pysarchik, 2017).
  2. Thorough research has been done regarding the disease, and various causes have been shown.
  3. They include genetic heredity, socio-cultural factors, dietary factors, biological medication and environmental factors.
  4. There is a study that proposes that some alleles increase an individual’s risk for depression suggesting that depression might be genetic.
  5. Signs of depression have changed as a response to the loss of status or position after an ensuing conflict (Ni, Li, Pang, Chan, Kawachi, Viswanath, & Leung, 2017).
  6. Some innate deeds cut in automatically when triggered by specific stimuli in the environment leading to loss situations.
  7. This is evident in the case that in our modern day setting, certain loss situations such as a marital breakup or job loss might trigger depression (Fried & Nesse, 2015).


Andrews, P. W., Bharwani, A., Lee, K. R., Fox, M., & Thomson, J. A. (2015). Is serotonin an upper or a downer? The evolution of the serotonergic system and its role in depression and the antidepressant response. Neuroscience & Biobehavioral Reviews51, 164-188.

Fried, E. I., & Nesse, R. M. (2015). Depression is not a consistent syndrome: an investigation of unique symptom patterns in the STAR* D study. Journal of affective disorders172, 96-102.

Miller, A. H., & Raison, C. L. (2016). The role of inflammation in depression: from evolutionary imperative to modern treatment target. Nature Reviews Immunology16(1), 22-34.

Ni, M., Li, T., Pang, H., Chan, B., Kawachi, I., Viswanath, V., … & Leung, G. (2017). 892-Evolution of Depression before, during and after a Major Social Movement. Biological Psychiatry81(10), S360.

Runnova, A. E., Zhuravlev, M. O., Khramova, M. V., & Pysarchik, A. N. (2017, April). The study of evolution and depression of the alpha-rhythm in the human brain EEG by means of wavelet-based methods. In Saratov Fall Meeting 2016: Laser Physics and Photonics XVII; and Computational Biophysics and Analysis of Biomedical Data III (Vol. 10337, p. 1033713). International Society for Optics and Photonics.


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