RT Journal Article T1 The Effect of Maternal Obesity on Breast Milk Fatty Acids and Its Association with Infant Growth and Cognition—The PREOBE Follow-Up A1 Garza Puentes, Andrea de la A1 Martí Alemany, Adrià A1 Chisaguano, Aida Maribel A1 Montes Goyanes, Rosa A1 Castellote, Ana I. A1 Torres-Espínola, Francisco J. A1 García-Valdés, Luz A1 Escudero-Marín, Mireia A1 Segura, María Teresa A1 Campoy, Cristina A1 López-Sabater, M. Carmen K1 Maternal obesity K1 Breastfeeding K1 Breast milk K1 Colostrum K1 Mature milk K1 Fatty acids K1 LC-PUFA K1 Omega-3 K1 Omega-6 K1 DHA K1 AA K1 Children K1 Growth K1 Cognition K1 Early life nutrition K1 Programming AB This study analyzed how maternal obesity affected fatty acids (FAs) in breast milk and their association with infant growth and cognition to raise awareness about the programming effect of maternal health and to promote a healthy prenatal weight. Mother–child pairs (n = 78) were grouped per maternal pre-pregnancy body mass index (BMI): normal-weight (BMI = 18.5–24.99), overweight (BMI = 25–29.99) and obese (BMI > 30). Colostrum and mature milk FAs were determined. Infant anthropometry at 6, 18 and 36 months of age and cognition at 18 were analyzed. Mature milk exhibited lower arachidonic acid (AA) and docosahexaenoic acid (DHA), among others, than colostrum. Breast milk of non-normal weight mothers presented increased saturated FAs and n6:n3 ratio and decreased α-linolenic acid (ALA), DHA and monounsaturated FAs. Infant BMI-for-age at 6 months of age was inversely associated with colostrum n6 (e.g., AA) and n3 (e.g., DHA) FAs and positively associated with n6:n3 ratio. Depending on the maternal weight, infant cognition was positively influenced by breast milk linoleic acid, n6 PUFAs, ALA, DHA and n3 LC-PUFAs, and negatively affected by n6:n3 ratio. In conclusion, this study shows that maternal pre-pregnancy BMI can influence breast milk FAs and infant growth and cognition, endorsing the importance of a healthy weight in future generations PB MDPI YR 2019 FD 2019 LK http://hdl.handle.net/10347/20970 UL http://hdl.handle.net/10347/20970 LA eng NO de la Garza Puentes, A.; Martí Alemany, A.; Chisaguano, A.M.; Montes Goyanes, R.; Castellote, A.I.; Torres-Espínola, F.J.; García-Valdés, L.; Escudero-Marín, M.; Segura, M.T.; Campoy, C.; López-Sabater, M.C. The Effect of Maternal Obesity on Breast Milk Fatty Acids and Its Association with Infant Growth and Cognition—The PREOBE Follow-Up. Nutrients 2019, 11, 2154. NO This research was funded by the European Commission (DynaHEALTH-HORIZON 2020 GA No: 633595)and the Spanish Ministry of Economy and Competitiveness (BFU2012-40254-C03-02). Further support was obtainedfrom, Spanish Ministry of Innovation and Science (Junta de Andalucía), Excellence Projects (P06-CTS-02341).ADLGP thanks the Mexican government and the National Council on Science and Technology (CONACYT) forher PhD grant DS Minerva RD 28 abr 2026