CHRONOTYPE ASSOCIATIONS WITH DEPRESSION AND ANXIETY DISORDERS IN A LARGE COHORT STUDY

@article{Antypa2016CHRONOTYPEAW,
  title={CHRONOTYPE ASSOCIATIONS WITH DEPRESSION AND ANXIETY DISORDERS IN A LARGE COHORT STUDY},
  author={Niki Antypa and Nicole Vogelzangs and Ybe Meesters and Robert A. Schoevers and Brenda W.J.H. Penninx},
  journal={Depression and Anxiety},
  year={2016},
  volume={33}
}
The chronotype, being a morning or an evening type, can influence an individual's psychological health. Studies have shown a link between depressed mood and being an evening type; however, most studies have used symptom scales and not diagnostic criteria, and confounding factors such as sleep patterns and somatic health factors have often not been considered. This study aims to examine the association between chronotype and depressive (major depressive disorder (MDD), dysthymia) and anxiety… 
Chronotype and Psychiatric Disorders
TLDR
An overview of the current evidence available on the relationship between chronotype and psychiatric disorders is provided, finding eveningness is associated with depression—including seasonal affective disorder (SAD)—and substance dependence, while support for a relation with anxiety disorders and psychosis is lacking.
Associations between chronotypes and psychological vulnerability factors of depression
TLDR
It is found that the evening type is associated with higher cognitive reactivity scores, especially with increased rumination, which implies that targeting depressogenic cognitive processes, perhaps in combination with chronotherapeutic treatments, may be particularly useful in evening types.
Chronotype and depressive symptoms in students: An investigation of possible mechanisms
TLDR
Even though the effect is small in terms of explained variance, eveningness is related to depressive symptoms and this relationship is mediated by poor sleep quality, also in a prospective design.
Chronotype in bipolar disorder: an 18-month prospective study
TLDR
It is indicated that evening chronotype predicts a poor prognostic for BD, which reinforces the relevance of treating rhythm disruptions even during euthymia to improve patient quality of life and prevent mood episodes.
Chronotype and depressive symptoms in healthy subjects: the mediating role of hopelessness and subjective sleep quality
TLDR
The relationship between eveningness and depressive symptoms was mediated by hopelessness, but not by subjective sleep quality, which might form the basis of a more specific approach to the prevention of depression in evening types.
Circadian preferences are associated with vegetative symptoms and comorbid medical diseases in patients with major depression
TLDR
The ratio of comorbid illness was found to be statistically significant among depressed patients with evening chronotype and the relationship between chronotypes and symptomatology in patients with major depression was examined.
Di ff erential associations between chronotype , anxiety , and negative a ff ect : A structural equation modeling approach
Background: Increasing evidence implicates circadian rhythms, including chronotype, in anxiety symptoms and disorders. However, it remains unclear whether this relation is accounted for by sleep
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References

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Depressive symptomatology is influenced by chronotypes.
Chronotype and Body Composition in Bipolar Disorder
TLDR
It is suggested that evening chronotype patients have a higher percentage of total body fat, which could be a proxy for as yet unknown specific causes of the high rate of obesity and obesity-related diseases in bipolar disorder.
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TLDR
Investigating the extent to which insomnia and sleep duration were associated with both current and remitted depressive and anxiety disorders in a large-scale epidemiologic study found that depressive disorder-but also anxiety disorder-is strongly associated with sleep disturbances.
Evening types are prone to depression
TLDR
The results suggest that individuals having a preference for evening hours to carry out their daily activities are prone to depression.
The influence of sleep complaints on the association between chronotype and negative emotionality in young adults
TLDR
The results indicate that eveningness-preference is an independent risk factor for higher negative emotionality regardless of the effects of age, gender, circadian misalignment and sleep complaints, and argue against the assumption that indicators of mental health problems in evening-type individuals can be explained exclusively on the basis of disturbed sleep.
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TLDR
The purpose of the present study was to assessed the association between chronotype and the level of depressive symptoms in a healthy sample population and the components of the depression scale that best discriminate the chronotypes were determined.
Associations Between Chronotypes, Psychopathology, and Personality Among Incoming College Students
TLDR
The findings of the evening type being associated with possible psychopathology and certain types of personality have public health implications, that is, chronotype needs to be taken into account in the development of mental health prevention programs and assessment of and intervention for mental problems in young adults.
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TLDR
The study analyzes the influence of circadian typology on psychological distress, and the sensation-seeking personality trait in college students to suggest that eveningness could be related to developing psychological distress and personality traits that could, in turn, berelated to developing other problems, such as drug consumption.
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