Sensitive Timing for Risk of Overweight Among Infants of Low-Income Hispanic Immigrants

Area of Science:

• Pediatrics
• Public Health
• Nutrition Science

Background:

• Early childhood overweight is a growing public health concern.
• Identifying risk factors in infancy is critical for prevention.
• Low-income Hispanic immigrant populations may face unique challenges related to infant nutrition and growth.

Purpose of the Study:

• To investigate the association between early weight gain (0-6 months) and the risk of being overweight at 1 year.
• To identify a critical window for intervention in a vulnerable infant population.

Main Methods:

• Retrospective analysis of weight-for-age data from 335 infants of low-income Hispanic immigrant mothers.
• Inclusion criteria: gestational age ≥37 weeks, appropriate birthweight, no medical issues affecting growth.
• Logistic regression models used to assess the impact of early weight changes on 1-year weight status.

Main Results:

• By 12 months, 36.7% of infants reached a weight-for-age of ≥84.1% on WHO growth charts.
• Each z-score increase in weight from 0-6 months was associated with a 20.8-fold increased odds of reaching this benchmark at 1 year (95% CI: [19.8, 44.0]).

Conclusions:

• Rapid early weight gain in the first six months is a significant predictor of overweight status at one year in this population.
• There is a critical, time-sensitive opportunity for interventions during infancy to mitigate overweight risk.
• Targeted interventions for low-income Hispanic immigrant infants are essential for preventing long-term obesity.