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Title: Long-chain polyunsaturated fatty acid status during pregnancy and maternal mental health in pregnancy and the postpartum period: results from the GUSTO study.
Author: Chong MF, Ong YL, Calder PC, Colega M, Wong JX, Tan CS, Lim AL, Fisk HL, Cai S, Pang WW, Broekman BF, Saw SM, Kwek K, Godfrey KM, Chong YS, Gluckman P, Meaney MJ, Chen H, GUSTO Study Group.
Journal: J Clin Psychiatry; 2015 Jul; 76(7):e848-56. PubMed ID: 26231011.
Abstract:
OBJECTIVE: Studies have demonstrated a relationship between lower omega-3 long-chain polyunsaturated fatty acid (LC-PUFA) status and anxiety and depression. It is uncertain whether similar associations occur in pregnant women, when anxiety and depression could have long-term effects on the offspring. We examined the associations between plasma LC-PUFA status during pregnancy and perinatal mental health. METHOD: At 26-28 weeks' gestation, plasma LC-PUFAs were measured in mothers of the Growing Up in Singapore Toward healthy Outcomes (GUSTO) mother-offspring cohort study, who were recruited between June 2009 and September 2010. Maternal symptoms of anxiety and depression were assessed with the State-Trait Anxiety Inventory (STAI) and Edinburgh Postnatal Depression Scale (EPDS) during the same period and at 3 months' postpartum. The STAI-state subscale was used as a continuous measure of current anxiety, while EPDS scores ≥ 15 during pregnancy or ≥ 13 postpartum were indicative of symptoms of probable depression. RESULTS: In adjusted regression analyses (n = 698), lower plasma total omega-3 PUFA concentrations (β = -6.49 STAI-state subscale scores/unit increase of omega-3 fatty acid; 95% CI, -11.90 to -1.08) and higher plasma omega-6:omega-3 PUFA ratios (β = 6.58 scores/unit increase of fatty acid ratio; 95% CI, 1.19 to 12.66), specifically higher arachidonic acid (AA):docosahexaenoic acid, AA:eicosapentaenoic acid, and AA:docosapentaenoic acid ratios, were associated with increased antenatal anxiety (P < .05 for all), but not postpartum anxiety. There was no association between plasma PUFAs and perinatal probable depression. CONCLUSIONS: No association was found with probable depression in pregnancy or postpartum. Lower plasma omega-3 fatty acids and higher omega-6:omega-3 fatty acid ratios were associated with higher antenatal anxiety, but not postpartum anxiety. Replication in other studies is needed to confirm the findings and determine the direction of causality. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT01174875.

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