A large analysis found that longer weekday sleep duration (WSD)—especially 8.5–14 hours/day—was linked to a 74% higher odds of chronic obstructive pulmonary disease (COPD) (OR 1.74). 

**Key Findings:**
- Nonlinear modeling showed a positive association for 7–14 hours/day (OR 1.12 per additional hour), with the strongest effect in those doing weekend catch-up sleep. 
- The model’s predictive accuracy was high (AUC = 0.811). 

Researchers suggest excessive weekday sleep may signal or contribute to COPD risk, warranting prospective studies to clarify causality and guide prevention.

Source: Dovepress | [Read Full Story](https://www.dovepress.com/nonlinear-association-between-weekday-sleep-duration-and-copd-risk-evi-peer-reviewed-fulltext-article-COPD)