Fish Oil-Based IV Nutrition and Liver Health in Premature Infants

This analysis combined results from 15 randomized trials (1,876 infants total) comparing different types of intravenous fat emulsions given to very low birth weight preterm babies. Researchers were looking at which formulations were associated with lower rates of parenteral nutrition-associated liver disease, a known complication in fragile newborns fed intravenously.

Using a technique that lets researchers compare multiple treatments at once (a network meta-analysis), the study found that an emulsion combining fish oil, olive oil, and soybean oil was linked to the biggest reduction in liver disease compared to standard soybean oil emulsion, though this result came from only one study with a high risk of bias. A four-component blend (soybean oil, medium-chain triglycerides, olive oil, and fish oil) also showed a trend toward benefit, especially in the smallest, most vulnerable infants, though this did not reach statistical significance.

Across all rankings, fish oil-containing emulsions consistently performed better than soybean-oil-only formulas. However, the researchers noted no differences in consistency between studies, and rated the overall certainty of evidence as low to very low, meaning more rigorous, larger trials are needed before firm conclusions can be drawn.