{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T11:59:51Z","timestamp":1791547191820,"version":"4.3.4"},"reference-count":36,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T00:00:00Z","timestamp":1621209600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Newcastle University Research Excellence Academy","award":["BJS\/400365055"],"award-info":[{"award-number":["BJS\/400365055"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Bariatric surgery prior to pregnancy is a significant risk factor for small for gestational age (SGA) babies. This case-control study investigated differences between mothers delivering an SGA baby following bariatric surgery, compared to those delivering an appropriate for gestational age (AGA) baby. Out of 129 babies born to mothers in the AURORA cohort study, 25 were SGA (&lt;10th percentile) and 97 were AGA (10th\u201390th percentile). Higher gestational weight gain (GWG) was significantly associated with decreased odds of SGA (aOR per kg 0.92, 95% CI 0.85\u20130.99). According to the Institute of Medicine GWG guidelines, 44% of SGA mothers had \u2018inadequate\u2019 GWG compared to 17% of AGA mothers. Nearly half of the mothers had \u2018excessive\u2019 GWG yet still gave birth to an SGA or AGA baby. Mothers of SGA babies lost more weight following bariatric surgery (45.6 \u00b1 14.4 kg vs. 39.0 \u00b1 17.9 kg). Women who reported receiving nutritional advice following bariatric surgery were significantly less likely to have an SGA baby (aOR 0.15, 95% CI 0.0.4\u20130.55). Women with a history of bariatric surgery should be provided with specialized support before and during pregnancy to encourage adequate nutritional intake and weight gain to support healthy fetal growth.<\/jats:p>","DOI":"10.3390\/nu13051699","type":"journal-article","created":{"date-parts":[[2021,5,17]],"date-time":"2021-05-17T12:19:57Z","timestamp":1621253997000},"page":"1699","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Pregnancy after Bariatric Surgery: A Nested Case-Control Study of Risk Factors for Small for Gestational Age Babies in AURORA"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8878-5970","authenticated-orcid":false,"given":"Zainab","family":"Akhter","sequence":"first","affiliation":[{"name":"Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne NE2 4AX, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Heslehurst","sequence":"additional","affiliation":[{"name":"Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne NE2 4AX, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7392-2773","authenticated-orcid":false,"given":"Dries","family":"Ceulemans","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology, University Hospitals Leuven, 3000 Leuven, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Judith","family":"Rankin","sequence":"additional","affiliation":[{"name":"Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne NE2 4AX, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roger","family":"Ackroyd","sequence":"additional","affiliation":[{"name":"Department of Surgery, Sheffield Teaching Hospitals, Sheffield S10 2JF, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7837-4684","authenticated-orcid":false,"given":"Roland","family":"Devlieger","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology, University Hospitals Leuven, 3000 Leuven, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,5,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1111\/obr.12288","article-title":"Risks associated with obesity in pregnancy, for the mother and baby: A systematic review of reviews","volume":"16","author":"Marchi","year":"2015","journal-title":"Obes. 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