Association between allostatic load and trouble sleeping in U.S. adults

Area of Science:

• Physiology
• Sleep Science
• Public Health

Background:

• Allostatic load (ALS) represents the cumulative physiological burden of chronic stress.
• Sleep disturbances are a significant public health concern with widespread implications.
• Understanding the link between physiological stress and sleep is crucial for developing effective interventions.

Purpose of the Study:

• To investigate the association between allostatic load and self-reported trouble sleeping.
• To determine if this association differs based on the criteria used to define allostatic load score (ALS).

Main Methods:

• Utilized data from the National Health and Nutrition Examination Survey (NHANES), a nationally representative cross-sectional study.
• Calculated ALS using empirical and clinical criteria based on eight biomarkers (cardiovascular, metabolic, immune).
• Employed weighted multivariate logistic regression and conducted gender-specific subgroup analyses.

Main Results:

• A total of 5331 participants were analyzed, with 29% reporting trouble sleeping.
• Higher allostatic load was significantly associated with increased odds of trouble sleeping (OR 1.13 for empirical ALS, OR 1.08 for clinical ALS).
• The association between allostatic load and sleep problems was consistent across both genders.

Conclusions:

• This study provides robust evidence linking higher allostatic load to increased odds of experiencing trouble sleeping.
• The findings highlight the role of physiological dysregulation in sleep health.
• Integrated approaches to managing stress and improving sleep are recommended.