Breastfeeding at 6 Months: IQ & Academic Benefits
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Main Point:
The study, conducted by researchers at the University of Bristol using data from the Avon Longitudinal Study of Parents and Children (ALSPAC), suggests a strong association between breastfeeding at six months and a wide range of positive neurocognitive outcomes in children, extending into late adolescence.More than 40 outcomes were linked to breastfeeding, including better academic skills, higher IQ scores, and improved speech skills.
Study Details:
Source: Published in the journal Nutrients. (https://www.mdpi.com/2072-6643/17/17/2847)
Data Source: ALSPAC - a study of over 14,500 pregnant women in the UK.
Participants: Data from 11,337 mothers who responded at six months.
Breastfeeding groups:
28.7% still breastfeeding at 6 months
24.4% never breastfed
46.9% stopped before 6 months
exposure: Breastfeeding at six months (didn’t differentiate between exclusive or partial).
Outcomes Measured: 373 continuous measures of neurocognitive development from infancy through adolescence (parent, teacher, self-reports, and direct testing). Confounders Considered: Maternal and paternal education,maternal age,birth order,housing tenure,delivery mode,maternal smoking.
Statistical Analysis: Multivariable linear regression. Stringent meaning thresholds were used (p<0.0001 unadjusted, p<0.001 adjusted).
Background & Previous research:
Previous studies have had inconsistent results, often due to small sample sizes or varying measurement methods.
A Belarusian RCT showed benefits in verbal IQ and skills, but no behavioral differences.
Systematic reviews generally support a positive link between breastfeeding and IQ, and some suggest benefits for executive function and behavior.
Studies in Scotland, Japan, and Australia have also shown positive associations with learning, language, and intelligence.
There was a gap in exploring a wider range of neurocognitive outcomes due to the need for large datasets.
In essence, this study provides robust evidence, using a large and comprehensive dataset, that breastfeeding at six months is associated with a broad spectrum of positive neurocognitive development in children.
