Temporal Associations Between Social Media Use and Depression.

Area of Science:

• Psychiatry and Behavioral Sciences
• Public Health
• Digital Health

Background:

• Cross-sectional studies show links between social media use and depression.
• Temporal and directional associations remain unclear.

Purpose of the Study:

• To investigate the temporal relationship between social media use and depression in young adults.
• To determine if social media use predicts future depression or vice versa.

Main Methods:

• Recruited a national sample of 990 young adults (18-30 years) in 2018.
• Assessed social media use and depression (9-Item Patient Health Questionnaire) at baseline and 6-month follow-up.
• Controlled for sociodemographic covariates in multivariable analyses.

Main Results:

• Increased odds of developing depression were associated with higher baseline social media use (AOR=2.77).
• No significant association was found between baseline depression and increased social media use at follow-up.
• Results were robust across sensitivity analyses.

Conclusions:

• Baseline social media use is an independent predictor of developing depression in young adults.
• The findings suggest a unidirectional temporal association from social media use to depression.
• This pattern supports social media use as a potential risk factor for depression.