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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Effects of being born small for gestational age on long-term intellectual performance
Ester Maria Lundgren1, Torsten Tuvemo
1Department of women's and children's Health, Uppsala University, Uppsala University Hospital, SE-751 85 Uppsala, Sweden. maria.lundgren@kbh.uu.se
Insights
Being born small for gestational age (SGA) is linked to lower intelligence and behavioral issues. Breastfeeding for over six months may improve intellectual development in these children.
Area of Science:
- Developmental Pediatrics
- Neuroscience
- Public Health
Background:
- Birth size is a known risk factor for cardiovascular disease.
- Emerging evidence links being born small for gestational age (SGA) to cognitive and behavioral challenges.
- Severe neurological impairments are rare in term SGA infants, but non-severe dysfunction may be more common.
Purpose of the Study:
- To review the association between being born small for gestational age (SGA) and intellectual development.
- To explore potential interventions to mitigate negative cognitive outcomes in SGA individuals.
Main Methods:
- Literature review of studies assessing intellectual performance in SGA individuals.
- Analysis of factors influencing cognitive outcomes, including feeding practices and medical treatments.
Main Results:
- Individuals born small for gestational age (SGA) show increased risks for lower intelligence, poor academic performance, and behavioral problems.
- Breastfeeding for over six months may positively impact intellectual development in SGA infants.
- Nutrient-enriched formula does not offer cognitive benefits and may increase overweight risk; growth hormone treatment might influence IQ.
Conclusions:
- Being born small for gestational age (SGA) is associated with a higher risk of suboptimal intellectual and behavioral outcomes.
- Early life interventions, particularly prolonged breastfeeding, may be crucial for enhancing cognitive development in SGA children.
Abstract:
Size at birth has been associated repeatedly with increased risk of cardiovascular morbidity and mortality later in life. However, there is accumulating evidence to suggest an association between being born small for gestational age (SGA) and increased risk of lower intelligence, poor academic performance, low social competence and behavioural problems, compared with individuals born appropriate for gestational age. Crude neurological handicaps, such as cerebral palsy, are extremely rare in children born SGA at term. Such handicaps are more common in very premature children. However, there does appear to be an increase in the risk for non-severe neurological dysfunction in individuals born SGA. Intellectual performance is evaluated in young children in several different ways, including standardized tests such as Weschler's Intelligence Scale - Revised, and teachers and parents' reports. In adulthood, indirect variables such as education and occupation are used in addition to standardized tests. It may be possible to modify the effects of SGA on intellectual development by breast feeding the baby for more than 6 months. Nutrient-enriched formula does not have any advantages when it comes to intellectual development, and induces a risk of rapid weight gain and eventually overweight. Growth hormone treatment may also have some effect on intelligence quotient.
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