Lipid-based nutrient supplements for maternal, birth, and infant developmental outcomes

Area of Science:

• Nutritional Science
• Maternal and Child Health
• Public Health Interventions

Background:

• Ready-to-use lipid-based nutrient supplements (LNS) are nutrient-dense options for pregnant women.
• Maternal nutrient intake is crucial for optimal pregnancy and birth outcomes.

Purpose of the Study:

• To evaluate the impact of LNS on maternal, birth, and infant outcomes in pregnant women.
• To explore optimal LNS composition, frequency, and duration for supplementation.

Main Methods:

• Systematic review and meta-analysis of randomized controlled trials (RCTs) and quasi-RCTs.
• Searched multiple databases including CENTRAL, MEDLINE, and Embase up to May 2018.
• Included four studies involving 8018 pregnant women in low- and middle-income countries.

Main Results:

• Compared to iron folic acid (IFA), LNS showed a slight increase in birth weight and length, and reduced small for gestational age (SGA) and newborn stunting.
• No significant differences were observed between LNS and multiple micronutrients (MMN) for most maternal and infant outcomes.
• Both IFA and MMN were more effective than LNS in reducing maternal anemia.

Conclusions:

• LNS supplementation demonstrates marginal benefits for specific infant outcomes compared to IFA.
• LNS and MMN appear comparable, but both are less effective than IFA/MMN in preventing maternal anemia.
• Evidence is limited by the small number of trials, warranting caution in practice recommendations.