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Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
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Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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Cigarette Smoke Exposure in Mice using a Whole-Body Inhalation System
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E-Cigarette Use, Systemic Inflammation, and Depression.

Kayla Rae Farrell1, Emma Karey1, Shu Xu2

  • 1Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY 10010, USA.

International Journal of Environmental Research and Public Health
|October 13, 2021
PubMed
Summary
This summary is machine-generated.

E-cigarette use is linked to depression, and both are associated with inflammation. This study found higher odds of depression in e-cigarette users, but inflammation did not significantly alter this association.

Keywords:
C-reactive proteindepressione-cigarettesinflammation

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Area of Science:

  • Public Health
  • Epidemiology
  • Mental Health Research

Background:

  • E-cigarette use (vaping) presents a growing public health concern.
  • Both vaping and depression are independently linked to increased systemic inflammation.
  • The interplay between inflammation, vaping, and depression remains under-explored.

Purpose of the Study:

  • To determine the independent associations between e-cigarette use, depression, and systemic inflammation.
  • To investigate if inflammation modifies the relationship between vaping and depression.
  • To assess the odds of depression among current e-cigarette users in relation to inflammation levels.

Main Methods:

  • Utilized data from the National Health and Nutrition Examination Survey (NHANES) 2015-2018 (n=4961).
  • Defined systemic inflammation using serum C-reactive protein (CRP) levels (≥ 8.0 mg/L).
  • Identified depression using the Patient Health Questionnaire-9 (PHQ-9) score (≥ 10).
  • Categorized e-cigarette users (current, exclusive, dual, former smokers) and analyzed associations using weighted logistic regression, adjusting for covariates.

Main Results:

  • Depression was significantly more prevalent in e-cigarette users (16.7%) compared to non-users (5.0%).
  • Elevated odds ratios (ORs) for depression were observed across all e-cigarette user categories, regardless of inflammation status.
  • While higher ORs for depression were noted in users with elevated CRP, statistical analysis indicated no significant interaction between inflammation and vaping status on depression.

Conclusions:

  • E-cigarette use is associated with a higher likelihood of depression.
  • Systemic inflammation did not significantly moderate the association between vaping and depression in this study.
  • Further research with larger cohorts is needed to fully understand the potential role of inflammation in depression among e-cigarette users.