Omega-3 fatty acids (especially DHA and EPA) are heavily transferred to the baby during pregnancy and breastfeeding, depleting maternal stores. Research links higher omega-3 intake with lower depression risk, making it one of the most promising nutritional supports for postpartum mood.
Educational information, not medical advice. This page summarizes published research and public-health guidance for learning purposes. It is not a substitute for diagnosis or treatment by a qualified clinician. If you are struggling, talk to your doctor or midwife. In a crisis, call or text 988 or the Maternal Mental Health Hotline at 1-833-852-6262.
Evidence snapshot — computed from live data
127
Studies indexed (PubMed)
moderate evidenceStrength score 55/100
Why Omega-3 matters for postpartum mood
DHA is a major structural fat in the brain, and EPA has anti-inflammatory effects tied to mood regulation. The fetus and breastfeeding infant draw heavily on maternal omega-3, so mothers are frequently depleted exactly when the brain needs it most.
Food sources
Rich dietary sources of Omega-3 include Salmon, Sardines, Walnuts, Flaxseed. Here is how a few compare on USDA nutrient data:
| Food | Protein | Iron | Energy |
|---|
| Salmon | 15.2g | 0.48mg | 139kcal |
| Sardines | 23.6g | 4.58mg | 211kcal |
| Walnuts | 14.3g | 2.86mg | 643kcal |
| Flaxseed | 19.4g | 5.81mg | 548kcal |
Per-100g nutrient values pulled live from the USDA FoodData Central database.
A food-first approach
Rebuilding Omega-3 through warming, nutrient-dense meals is central to Emily Montague’s postpartum recovery method. It supports — but never replaces — medical care for postpartum depression.
Sources & further reading
Selected recent peer-reviewed studies, pulled live from the U.S. National Library of Medicine (PubMed). Counts and citations update automatically.
- Zhou H et al. “Evaluating the Effectiveness of Complementary and Integrative Health Therapies in Preventing Postpartum Depression: A Target Trial Emulation Study.” AMIA ... Annual Symposium proceedings. AMIA Symposium (2024). PubMed →
- Unknown et al. “Marine Oils.” (2006). PubMed →
- Ładno D et al. “Selected Lipidome Components and Their Association with Perinatal Depression.” Nutrients (2025). PubMed →
- Matsumura K et al. “Periconceptional omega-6 and omega-3 polyunsaturated fatty acid intake plane and postpartum depression: a nationwide birth cohort-the Japan Environment and Children's Study.” American journal of epidemiology (2024). PubMed →
- Ghaedrahmati M et al. “The Association between Post-Partum Depression and Nutrition and Dietary Patterns: Systematic Review.” Iranian journal of nursing and midwifery research (2024). PubMed →