Recent research has found that shorter sleep and later bedtimes in children are linked to harmful functional changes in parts of the brain crucial for coping with stress and controlling negative emotions. Furthermore, children from families with low economic resources are particularly vulnerable to these negative effects. As neuroscientists committed to reducing socioeconomic disparities in child development, we conducted a study to investigate how socioeconomic disadvantage influences sleep health and brain development in children.

We recruited 94 children aged 5 to 9 from socioeconomically diverse families in New York, with around 30% of families living below the U.S. poverty threshold. Parents reported on their child’s sleep environment, family routines, bedtime, and wake-up time. Additionally, the children underwent magnetic resonance imaging scans to assess the size of the amygdala – a brain region crucial in processing emotions, especially negative ones.

Children from low economic resource families tended to have shorter sleep durations and later bedtimes compared to their peers from higher-income families. These factors were associated with reduced amygdala size and weaker connections with other emotion-processing brain regions. These findings highlight the importance of both the amount and timing of sleep in influencing brain function, particularly in emotion regulation.

Insufficient sleep not only increases the risk of mental health issues but also impacts academic performance. Children with inadequate sleep may struggle to cope with stress and regulate their emotions effectively. This is especially concerning for children in socioeconomically disadvantaged environments, where the risk of stress-related mental health problems is higher due to poor sleep quality. As childhood experiences can have lasting effects on brain function, addressing these issues early is crucial to prevent long-term consequences.

Our research suggests that parents facing financial difficulties may find it challenging to maintain consistent family routines, leading to irregular bedtime patterns for their children. However, other factors like inadequate sleep environments, such as uncomfortable beds, overcrowding, neighborhood noise, excessive light, and heat, also play a role. While most sleep studies focus on teenagers, our findings indicate that environmental influences on sleep habits begin much earlier. Early interventions to improve sleep quality and patterns may be necessary to safeguard children’s well-being.

Socioeconomic disadvantages can have detrimental effects on children’s sleep health and brain development. By providing economic support to families in need, we can help bolster children’s sleep quality, brain function, and emotional stability. It is imperative to address these issues early on to ensure optimal outcomes for children’s long-term well-being.

Health

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