The FDA's new advice on fish: it's complicated

Area of Science:

• Nutrition Science
• Public Health
• Maternal Health

Background:

• Most pregnant women have inadequate omega-3 fatty acid intake, specifically eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
• Omega-3s are crucial for fetal brain and retinal development, neurotransmission, and possess anti-inflammatory properties.
• Maternal fish consumption is linked to improved childhood cognitive and social development.

Purpose of the Study:

• To summarize updated FDA advice on fish consumption for pregnant and breastfeeding women.
• To highlight the importance of EPA and DHA from fish for maternal and child health.
• To address concerns about mercury contamination and the efficacy of supplements.

Main Methods:

• Review of recent FDA/EPA draft guidance on fish consumption.
• Analysis of the nutritional benefits of omega-3 fatty acids (EPA and DHA) from fish.
• Evaluation of evidence regarding fish consumption, mercury levels, and supplementation.

Main Results:

• The FDA advises pregnant women to eat fish but avoid high-mercury varieties.
• Fish provides essential EPA and DHA, crucial for infant development.
• Supplements are not recommended as a substitute for fish due to unknown optimal dosages and disappointing trial results.

Conclusions:

• Pregnant and nursing women should consume fish rich in EPA and DHA.
• Prioritize fish with low mercury and contaminant levels.
• Dietary fish intake is preferred over omega-3 supplements for maternal and child health benefits.