Associations between maternal adversity and health and children's telomere length

Area of Science:

• Developmental Psychology
• Genetics
• Public Health

Background:

• Maternal adversity and health issues can negatively affect offspring well-being.
• Accelerated biological aging, measured by telomere length, is a potential mechanism linking maternal factors to child health.
• Understanding these links is crucial for early intervention strategies.

Purpose of the Study:

• To investigate the association between maternal adversity and health (depressive symptoms, ACEs, chronic illness) and children's buccal telomere length (bTL) at age 3.
• To examine the impact of different trajectories of maternal depressive symptoms on offspring bTL.
• To explore the combined effects of maternal stressors on children's telomere biology.

Main Methods:

• Longitudinal study of 122 mother-child dyads over 3 years.
• Maternal data collected included Adverse Childhood Experiences (ACEs), chronic illness, and depressive symptoms at multiple time points (pregnancy, postpartum, 3 years postpartum).
• Children's bTL at age 3 was measured using quantitative PCR (T/S ratio).

Main Results:

• Distinct trajectories of maternal depressive symptoms were observed.
• Children of mothers with relapsing-remitting depressive symptoms had significantly shorter bTL compared to those with low-stable symptoms (β = -0.19).
• This association persisted after controlling for maternal ACEs and chronic illness; maternal ACEs and depressive symptoms may jointly influence offspring bTL.

Conclusions:

• Maternal depressive symptom patterns, particularly relapsing-remitting, are significant predictors of offspring's buccal telomere length at age 3.
• Maternal adversity and depressive symptoms collectively contribute to accelerated biological aging in children.
• Findings underscore the importance of addressing maternal mental health and adversity to promote child health and development.