Balanced protein/energy supplementation in pregnancy

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Nutritional Science

Background:

• Previous studies suggest energy/protein supplementation during pregnancy enhances gestational weight gain and fetal development.
• The precise impact of balanced protein/energy supplements on pregnancy outcomes requires systematic evaluation.

Purpose of the Study:

• To systematically review the effects of balanced protein/energy supplements for pregnant women.
• To assess the impact on maternal weight gain, fetal growth, and other pregnancy outcomes.

Main Methods:

• Searched the Cochrane Pregnancy and Childbirth Group trials register (up to January 2000).
• Included acceptably controlled trials of balanced energy/protein supplementation (protein <25% of total energy).
• Assessed trial quality and extracted data, contacting study authors for additional information.

Main Results:

• Thirteen trials of variable quality were included.
• Supplementation showed modest increases in maternal weight gain (17g/week) and fetal growth (25g birth weight).
• A significant reduction in the risk of small for gestational age births (OR 0.64) and potential reductions in stillbirth and neonatal death were observed.

Conclusions:

• Balanced energy/protein supplementation positively impacts fetal growth and may reduce fetal and neonatal mortality.
• Evidence is insufficient to confirm other potential benefits for mothers or infants.
• Further research is needed to fully elucidate long-term effects and benefits in specific populations.