Associations between sleep duration patterns and overweight/obesity at age 6

Area of Science:

• Pediatric Health
• Sleep Medicine
• Obesity Research

Background:

• Childhood obesity is a growing public health concern.
• Sleep duration is a modifiable behavior with potential links to metabolic health.
• Understanding early life risk factors for obesity is crucial for prevention.

Purpose of the Study:

• To determine if longitudinal sleep duration patterns in early childhood predict overweight or obesity at school entry.
• To investigate this relationship while controlling for various obesogenic environmental factors.

Main Methods:

• A prospective cohort study followed 1138 children from infancy to age 6 in Quebec, Canada.
• Sleep duration was reported annually by mothers; Body Mass Index (BMI) was measured at 2.5 and 6 years.
• Group-based semiparametric mixture models identified sleep patterns; multivariate logistic regression controlled for confounders.

Main Results:

• Four distinct sleep duration patterns were identified: short persistent, short increasing, 10-hour persistent, and 11-hour persistent.
• Children with persistently short sleep duration (<10 hours) had a 4.2 times higher risk of being overweight or obese at school entry.
• This increased risk was significant (OR, 4.2; 95% CI, 1.6 to 11.1; P = 0.003) and independent of other obesogenic factors.

Conclusions:

• Persistently short sleep duration during early childhood is a significant risk factor for childhood overweight and obesity.
• The findings highlight the importance of adequate sleep for preventing excess weight gain in children.
• Sleep duration patterns in early life appear to be an independent predictor of later obesity risk.