The association between adverse experiences and longitudinal allostatic load changes with the depression symptoms trajectories in middle-aged and older adults in China: A longitudinal study.

BACKGROUND

This study investigated the associations between adverse childhood experiences (ACEs), adverse adulthood experiences (AAEs), allostatic load (AL) changes, and later depression symptoms trajectories in middle-aged and older Chinese longitudinally.

METHODS

1921 individuals aged ≥45 years at baseline were included from the China Health and Retirement Longitudinal Study (CHARLS). Measures included ACEs, AAEs, depression symptoms scores, health-related factors, and demographic characteristics. AL changes were assessed by the difference in AL scores between wave 3 (2015) and wave 1(2011).

RESULTS

Compared to consistently low trajectory, 2 or more ACEs (OR 1.78, 95 % CI 1.28-2.46), 2 or more AAEs (OR 1.82, 95 % CI 1.26-2.64), decreasing metabolic AL over time (OR 0.63, 95 % CI 0.46-0.86), increasing inflammatory AL over time (OR 1.60, 95 % CI 1.07-2.37), and decreasing renal AL over time (OR 1.38, 95 % CI 1.01-1.87) were associated with the low-moderate depression symptoms trajectory. Furthermore, 2 or more ACEs (OR 1.48, 95 % CI 1.10-2.00), 2 or more AAEs (OR 1.85, 95 % CI 1.32-2.60), decreasing metabolic AL over time (OR 0.75, 95 % CI 0.57-1.00), increasing inflammatory AL over time (OR 1.69, 95 % CI 1.19-2.42) were associated with the high-moderate depression symptoms trajectory.

CONCLUSION

Experiencing more ACEs and AAEs was associated with higher depression symptoms trajectories. Moreover, participants with decreasing metabolic AL over time showed a low depression symptoms trajectory, while those with increasing inflammatory AL over time and decreasing renal AL over time showed a worse depression symptoms trajectory. These findings highlighted the physiological damage caused by stress on mental health outcomes.