Material hardship and telomere length in children

Area of Science:

• Biomarkers
• Human Development
• Public Health

Background:

• Telomere length (TL) is a recognized biomarker for cumulative stress exposure.
• Material hardship is a significant socioeconomic stressor impacting child development.
• Understanding the long-term health implications of early-life adversity is crucial.

Purpose of the Study:

• To investigate the association between prior material hardship and salivary telomere length.
• To identify potential sensitive periods during childhood for the impact of material hardship on TL.
• To examine TL as a biomarker for socioeconomic stress in a longitudinal cohort.

Main Methods:

• Utilized data from the Future of Families and Child Wellbeing Study (1998-2015).
• Employed regression analyses to assess the relationship between material hardship and TL at years 9 and 15.
• Analyzed a diverse cohort with demographic data including sex, race, and ethnicity.

Main Results:

• A significant association was found between prior material hardship and shorter TL at year 9 (β = -.005, p < .01).
• Material hardship during infancy and toddlerhood was significantly associated with shorter TL at year 15 (β = -.009, p < .01).
• These findings suggest that early childhood represents a sensitive period for the impact of material hardship on telomere length.

Conclusions:

• Early-life material hardship has a lasting impact on telomere length, indicating biological embedding of socioeconomic stress.
• Infancy and toddlerhood appear to be critical windows where material hardship can accelerate cellular aging.
• TL serves as a valuable biomarker for assessing the long-term health consequences of socioeconomic adversity in children.