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With a rising worldwide incidence of obesity, particularly in the young, bariatric surgery offers an effective method of meaningful and sustained weight loss. At present, most bariatric procedures are carried out in women and increasingly in younger age groups. In line with the fertility benefits associated with weight loss, pregnancy after bariatric surgery is now a very common scenario. Although there is limited evidence to support optimal care in this group, most women appear to have good pregnancy outcomes, with reduced rates of preeclampsia and gestational diabetes (GDM). However, rates of stillbirth and small-for gestational-age (SGA) babies are increased, suggesting that screening and supplementation of micronutrients is likely to be very important in this cohort. The risks and benefits bariatric surgery may pose to pregnancy outcomes, both maternal and fetal, are largely dependent upon the degree of weight loss, weight stability upon entering pregnancy, surgical complications and the time interval between bariatric surgery and pregnancy. Ideally, preconception care would be more widely available, helping to assess and address micronutrient deficiencies and support preparation for pregnancy., Competing Interests: Declaration of Competing Interests The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Claire L Meek reports a relationship with NIHR Leicester BRC that includes: funding grants. Claire L Meek reports a relationship with European Foundation for the Study of Diabetes that includes: funding grants. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Ltd.)