Related Experiment Video
Updated: Feb 12, 2026

Dietary Supplementation of Polyunsaturated Fatty Acids in Caenorhabditis elegans
Published on: November 29, 2013
The effect of long chain polyunsaturated fatty acid supplementation on intelligence in low birth weight infant during
Yuan Song1,2, Ya Liu1, Yun Pan3
1Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun, China.
Insights
Long chain polyunsaturated fatty acid (LCPUFA) supplementation during lactation did not significantly improve intelligence scores in low birth weight infants (LBWIs). This meta-analysis found no difference in cognitive development between supplemented and unsupplemented LBWIs.
Area of Science:
- Neuroscience
- Developmental Pediatrics
- Nutritional Science
Background:
- Low birth weight infants (LBWIs) face increased risks of mental and behavioral issues.
- Long chain polyunsaturated fatty acids (LCPUFAs) are crucial for fetal and infant brain and visual development.
- The impact of LCPUFA supplementation during lactation on LBWI intelligence requires further investigation.
Purpose of the Study:
- To evaluate the effect of LCPUFA supplementation during lactation on the intelligence of low birth weight infants.
- To synthesize existing evidence through a meta-analysis to determine the efficacy of LCPUFA supplementation.
Main Methods:
- A comprehensive literature search was conducted across multiple databases.
- Studies comparing cognitive scores (Bayley Scales of Infant Development [BSID] or Wechsler Abbreviated Scale of Intelligence for Children [WISC]) in supplemented versus unsupplemented LBWIs were selected.
- A meta-analysis was performed on the selected studies.
Main Results:
- No significant difference was observed in the mean scores of the Mental Development Index (MDI) or Psychomotor Development Index (PDI) from the BSID.
- Similarly, no significant difference was found in the Full Scale Intelligence Quotient (FSIQ), Verbal Intelligence Quotient (VIQ), or Performance Intelligence Quotient (PIQ) from the WISC.
- LCPUFA supplementation did not demonstrate a significant impact on cognitive outcomes in LBWIs.
Conclusions:
- This meta-analysis concludes that LCPUFA supplementation during lactation does not significantly enhance the intelligence of low birth weight infants.
- Further research may be needed to explore specific LCPUFAs or different intervention timings.
Background:
Low birth weight infant (LBWIs) are prone to mental and behavioural problems. As an important constituent of the brain and retina, long chain polyunsaturated fatty acids are essential for foetal infant mental and visual development. The effect of lactation supplemented with long chain polyunsaturated fatty acids (LCPUFA) on the improvement of intelligence in low birth weight children requires further validation.
Methods:
In this study, a comprehensive search of multiple databases was performed to identify studies focused the association between intelligence and long chain polyunsaturated fatty acid supplementation in LBWIs. Studies that compared the Bayley Scales of Infant Development (BSID) or the Wechsler Abbreviated Scale of Intelligence for Children (WISC) scores between LBWIs who were supplemented and controls that were not supplemented with LCPUFA during lactation were selected for inclusion in the meta-analysis.
Results:
The main outcome was the mean difference in the mental development index (MDI) and psychomotor development index (PDI) of the BSID and the full scale intelligence quotient (FSIQ), verbal intelligence quotient (VIQ) and performance intelligence quotient (PIQ) of the WISC between LBWIs and controls. Our findings indicated that the mean BSID or WISC scores in LBWIs did not differ between the supplemented groups and controls.
Conclusion:
This meta-analysis does not reveal that LCPUFA supplementation has a significant impact on the level of intelligence in LBWIs.
Related Concept Videos
Overview of Fatty Acid Metabolism
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Birth Control Methods
Electron Transport Chains
The ETC is comprised of...
Intelligence
Weighted Mean
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
Amino acids

