Why Do Depression and Anxiety Go Together?

Even though depression and anxiety are different types of disorders, they tend to go together. But why can it happen?

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National Suicide Prevention Lifeline: 1-800-273-8255
Crisis Text Line: https://www.crisistextline.org/
International Resources: https://yourlifecounts.org/find-help/

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Sources:
https://www.nature.com/articles/srep40511
https://tourette.ca/wp-content/uploads/2016/10/DSM-5_Depressive_Disorders.pdf
https://images.pearsonclinical.com/images/assets/basc-3/basc3resources/DSM5_DiagnosticCriteria_GeneralizedAnxietyDisorder.pdf
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https://www.health.harvard.edu/newsletter_article/generalized-anxiety-disorder

The Comorbidity of Anxiety and Depression

https://www.health.harvard.edu/staying-healthy/understanding-the-stress-response

Can We Distinguish Anxiety From Depression?

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957550/
http://www.psychiatrictimes.com/anxiety/understanding-comorbid-depression-and-anxiety
https://www.sciencedirect.com/science/article/pii/S0191886905001509
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serotonin receptors: https://www.cell.com/neuron/fulltext/S0896-6273(09)00980-5
norepinephrine: https://onlinelibrary.wiley.com/doi/full/10.1002/da.20642
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Image Sources:
https://www.istockphoto.com/photo/how-will-i-know-if-im-right-gm987567772-267815140
https://www.istockphoto.com/photo/business-woman-is-depressed-she-felt-stressed-and-alone-in-the-house-gm947804676-258783178
https://www.istockphoto.com/photo/thoughtful-stressed-man-with-a-mess-in-his-head-gm920000698-252878636
https://en.wikipedia.org/wiki/Serotonin#/media/File:Serotonin-Spartan-HF-based-on-xtal-3D-balls-web.png
https://commons.wikimedia.org/wiki/File:Noradrenaline_3D_ball.png
https://www.istockphoto.com/vector/brain-vector-illustration-in-top-view-gm1027464288-275475407

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