Cognitive function and overweight in preschool children

Area of Science:

• Pediatrics
• Developmental Psychology
• Public Health

Background:

• Childhood overweight is a growing public health concern.
• Cognitive development in early childhood is crucial for overall well-being.
• Understanding factors influencing weight status in preschoolers is essential for prevention strategies.

Purpose of the Study:

• To investigate the association between cognitive function at age 4 years and the incidence and maintenance of overweight at age 6 years.
• To explore the relationship between specific cognitive domains and weight status.
• To identify early life predictors of childhood overweight.

Main Methods:

• A population-based birth cohort study in Menorca, Spain (n=482).
• Assessment of cognitive function using McCarthy Scales of Children's Abilities at age 4 years (n=395).
• Measurement of Body Mass Index (BMI) at ages 4 and 6 years (n=421), with multivariable adjustments for confounding factors.

Main Results:

• Children with higher general cognition at age 4 years showed a significantly lower likelihood of being overweight at age 6 years (OR=0.47, 95% CI: 0.25, 0.88).
• Higher cognitive function was associated with a reduced likelihood of maintaining an unhealthy weight status or worsening weight status between ages 4 and 6 years.
• Associations were primarily linked to verbal and executive function domains of cognitive ability.

Conclusions:

• Early childhood cognitive function, particularly verbal and executive skills, may be a protective factor against the development of overweight.
• These findings suggest that interventions promoting cognitive development could potentially contribute to preventing childhood obesity.
• Further research is warranted to elucidate the mechanisms underlying this association.