OBJECTIVE: To assess the efficacy of folic acid (FA) supplementation and fortification in preventing neural tube defects (NTDs) in a high prevalence region of the United States. STUDY DESIGN: Active and passive surveillance methods were used to identify all fetuses/infants affected with an NTD in South Carolina. Prevalence rates were compared with FA intake to determine the effects of increased intake on NTD occurrence and recurrence. RESULTS: From 1992 to 2009, 916 NTD cases occurred in South Carolina, with isolated defects comprising 79% of cases. The NTD rate decreased 58% during this period. There was one NTD-affected pregnancy in 418 subsequent pregnancies (0.2%) in mothers with earlier NTD-affected pregnancies who consumed periconceptional FA supplements, and there were 4 NTDs in 66 pregnancies (6.1%) in which the mother did not take FA supplements. FA supplementation increased from 8% to 35% from 1992 to 2007, and knowledge of the protective benefits of FA increased from 8% to 65% in women of childbearing age. CONCLUSIONS: Increased periconceptional intake of FA appeared to reduce NTDs in a high-prevalence region. The rate of spina bifida and anencephaly in South Carolina is now essentially the same (0.69 cases per 1000 live births and fetal deaths) as the 1998 to 2005 US rate (0.69).
OBJECTIVE: To assess the efficacy of folic acid (FA) supplementation and fortification in preventing neural tube defects (NTDs) in a high prevalence region of the United States. STUDY DESIGN: Active and passive surveillance methods were used to identify all fetuses/infants affected with an NTD in South Carolina. Prevalence rates were compared with FA intake to determine the effects of increased intake on NTD occurrence and recurrence. RESULTS: From 1992 to 2009, 916 NTD cases occurred in South Carolina, with isolated defects comprising 79% of cases. The NTD rate decreased 58% during this period. There was one NTD-affected pregnancy in 418 subsequent pregnancies (0.2%) in mothers with earlier NTD-affected pregnancies who consumed periconceptional FA supplements, and there were 4 NTDs in 66 pregnancies (6.1%) in which the mother did not take FA supplements. FA supplementation increased from 8% to 35% from 1992 to 2007, and knowledge of the protective benefits of FA increased from 8% to 65% in women of childbearing age. CONCLUSIONS: Increased periconceptional intake of FA appeared to reduce NTDs in a high-prevalence region. The rate of spina bifida and anencephaly in South Carolina is now essentially the same (0.69 cases per 1000 live births and fetal deaths) as the 1998 to 2005 US rate (0.69).
Authors: Julianne S Collins; Mark A Canfield; Kay Pearson; Russell S Kirby; Amy P Case; Cara T Mai; Judy Major; Joe Mulinare Journal: Birth Defects Res A Clin Mol Teratol Date: 2009-11
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Authors: J K Morris; J Rankin; E S Draper; J J Kurinczuk; A Springett; D Tucker; D Wellesley; B Wreyford; N J Wald Journal: Arch Dis Child Date: 2015-12-17 Impact factor: 3.791
Authors: Joan K Morris; Anna L Springett; Ruth Greenlees; Maria Loane; Marie-Claude Addor; Larraitz Arriola; Ingeborg Barisic; Jorieke E H Bergman; Melinda Csaky-Szunyogh; Carlos Dias; Elizabeth S Draper; Ester Garne; Miriam Gatt; Babak Khoshnood; Kari Klungsoyr; Catherine Lynch; Robert McDonnell; Vera Nelen; Amanda J Neville; Mary O'Mahony; Anna Pierini; Annette Queisser-Luft; Hanitra Randrianaivo; Judith Rankin; Anke Rissmann; Jennifer Kurinczuk; David Tucker; Christine Verellen-Dumoulin; Diana Wellesley; Helen Dolk Journal: PLoS One Date: 2018-04-05 Impact factor: 3.240
Authors: Joan K Morris; Marie-Claude Addor; Elisa Ballardini; Ingeborg Barisic; Laia Barrachina-Bonet; Paula Braz; Clara Cavero-Carbonell; Elly Den Hond; Ester Garne; Miriam Gatt; Martin Haeusler; Babak Khoshnood; Nathalie Lelong; Agnieszka Kinsner-Ovaskainen; Sonja Kiuru-Kuhlefelt; Kari Klungsoyr; Anna Latos-Bielenska; Elizabeth Limb; Mary T O'Mahony; Isabelle Perthus; Anna Pierini; Judith Rankin; Anke Rissmann; Florence Rouget; Gerardine Sayers; Antonin Sipek; Sarah Stevens; David Tucker; Christine Verellen-Dumoulin; Hermien E K de Walle; Diana Wellesley; Wladimir Wertelecki; Eva Bermejo-Sanchez Journal: Front Pediatr Date: 2021-06-24 Impact factor: 3.418