Moderate-to-Severe Depression Adversely Affects Lung Function in Chinese College Students

Area of Science:

• Pulmonary Medicine
• Psychiatry
• Public Health

Background:

• Depression is associated with increased risk for chronic obstructive pulmonary disease (COPD) in older adults.
• Limited evidence exists on the association between depression and lung function in healthy young adults.
• Understanding this link in college students is crucial for early intervention.

Purpose of the Study:

• To investigate the association between depression severity and lung function in Chinese college students.
• To measure lung function using forced vital capacity (FVC) and depression severity using the Zung Self-Rating Depression Scale (SDS).
• To identify potential correlations in a young, healthy population.

Main Methods:

• Cross-sectional study of 3,891 Chinese college students aged 16-24 years.
• Lung function assessed via spirometry to measure FVC.
• Depression severity evaluated using the 20-item Zung Self-Rating Depression Scale (SDS).

Main Results:

• A significant negative trend was observed between depression severity and FVC levels (P=0.031).
• Students with moderate-to-severe depression had lower geometric mean FVC compared to those with normal or mild depression.
• Depression severity was independently correlated with lung function decline after adjusting for confounders.

Conclusions:

• Depression severity is independently associated with reduced lung function in Chinese college students.
• Findings suggest a potential link between mental health and respiratory health in young adults.
• Further prospective studies are needed to confirm causality and explore intervention strategies.