Preliminary evidence for an impulsivity-based thrifty eating phenotype.

Area of Science:

• Developmental origins of health and disease
• Pediatric nutrition
• Behavioral science

Background:

• Low birth weight is linked to later obesity and metabolic diseases.
• Understanding intrauterine growth's impact on childhood eating behaviors is crucial.

Purpose of the Study:

• To investigate if intrauterine growth quality influences obesogenic eating behaviors in children.
• To examine the relationship between birth weight and impulsive eating.
• To determine if impulsive eating predicts fat intake and BMI.

Main Methods:

• Utilized the snack delay test to assess impulsive eating in 3-year-olds.
• Investigated the association between birth weight and impulsive eating.
• Used a laboratory-based test meal to evaluate fat intake and BMI at 4 years.

Main Results:

• A significant gender × intrauterine growth restriction (IUGR) × trial interaction predicted food reward delay.
• Normal birth weight girls were better at delaying food rewards than boys.
• Impulsive responding in girls predicted increased fat consumption and higher BMIs at 48 months.

Conclusions:

• Fetal growth quality may program girls towards impulsive eating, increasing fat intake and BMI.
• This mechanism, adaptive in food-scarce environments, poses risks in food-rich societies.
• Findings highlight the long-term implications of intrauterine conditions on eating behaviors and health outcomes.