PMID- 33805588 OWN - NLM STAT- MEDLINE DCOM- 20210524 LR - 20210524 IS - 2072-6643 (Electronic) IS - 2072-6643 (Linking) VI - 13 IP - 3 DP - 2021 Mar 13 TI - Maternal Vitamin C and Iron Intake during Pregnancy and the Risk of Islet Autoimmunity and Type 1 Diabetes in Children: A Birth Cohort Study. LID - 10.3390/nu13030928 [doi] LID - 928 AB - Our aim was to study the associations between maternal vitamin C and iron intake during pregnancy and the offspring's risk of developing islet autoimmunity and type 1 diabetes. The study was a part of the Finnish Type 1 Diabetes Prediction and Prevention (DIPP) prospective birth cohort including children genetically at risk of type 1 diabetes born between 1997-2004. The diets of 4879 mothers in late pregnancy were assessed with a validated food frequency questionnaire. The outcomes were islet autoimmunity and type 1 diabetes. Cox proportional hazards regression analysis adjusted for energy, family history of diabetes, human leukocyte antigen (HLA) genotype and sex was used for statistical analyses. Total intake of vitamin C or iron from food and supplements was not associated with the risk of islet autoimmunity (vitamin C: HR 0.91: 95% CI (0.80, 1.03), iron: 0.98 (0.87, 1.10)) or type 1 diabetes (vitamin C: 1.01 (0.87, 1.17), iron: 0.92 (0.78, 1.08)), neither was the use of vitamin C or iron supplements associated with the outcomes. In conclusion, no association was found between maternal vitamin C or iron intake during pregnancy and the risk of islet autoimmunity or type 1 diabetes in the offspring. FAU - Mattila, Markus AU - Mattila M AUID- ORCID: 0000-0002-7829-9474 AD - Unit of Health Sciences, Faculty of Social Sciences, Tampere University, FI-33014 Tampere, Finland. AD - Research, Development and Innovation Center, Tampere University Hospital, P.O. Box 2000, FI-33521 Tampere, Finland. AD - Health and Well-Being Promotion Unit, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland. FAU - Hakola, Leena AU - Hakola L AUID- ORCID: 0000-0001-7115-6035 AD - Unit of Health Sciences, Faculty of Social Sciences, Tampere University, FI-33014 Tampere, Finland. AD - Research, Development and Innovation Center, Tampere University Hospital, P.O. Box 2000, FI-33521 Tampere, Finland. FAU - Niinisto, Sari AU - Niinisto S AD - Health and Well-Being Promotion Unit, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland. FAU - Tapanainen, Heli AU - Tapanainen H AD - Population Health Unit, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland. FAU - Takkinen, Hanna-Mari AU - Takkinen HM AD - Unit of Health Sciences, Faculty of Social Sciences, Tampere University, FI-33014 Tampere, Finland. AD - Research, Development and Innovation Center, Tampere University Hospital, P.O. Box 2000, FI-33521 Tampere, Finland. AD - Health and Well-Being Promotion Unit, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland. FAU - Ahonen, Suvi AU - Ahonen S AD - Unit of Health Sciences, Faculty of Social Sciences, Tampere University, FI-33014 Tampere, Finland. AD - Research, Development and Innovation Center, Tampere University Hospital, P.O. Box 2000, FI-33521 Tampere, Finland. AD - Health and Well-Being Promotion Unit, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland. FAU - Ilonen, Jorma AU - Ilonen J AUID- ORCID: 0000-0002-9973-2062 AD - Immunogenetics Laboratory, Institute of Biomedicine, University of Turku, FI-20014 Turku, Finland. FAU - Toppari, Jorma AU - Toppari J AD - Research Centre for Integrative Physiology and Pharmacology, Institute of Biomedicine, University of Turku, FI-20520 Turku, Finland. AD - Department of Pediatrics, Turku University Hospital, FI-20520 Turku, Finland. FAU - Veijola, Riitta AU - Veijola R AD - PEDEGO Research Unit, Department of Pediatrics, Medical Research Center, University of Oulu, P.O. Box 8000, FI-90014 Oulu, Finland. AD - Department of Children and Adolescents, Oulu University Hospital, P.O. Box 10, FI-90029 Oulu, Finland. FAU - Knip, Mikael AU - Knip M AUID- ORCID: 0000-0003-0474-0033 AD - Pediatric Research Center, Children's Hospital, University of Helsinki and Helsinki University Hospital, FI-00029 Helsinki, Finland. AD - Folkhalsan Research Center, FI-00251 Helsinki, Finland. AD - Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, FI-00014 Helsinki, Finland. AD - Department of Pediatrics, Tampere University Hospital, FI-33521 Tampere, Finland. FAU - Virtanen, Suvi M AU - Virtanen SM AD - Unit of Health Sciences, Faculty of Social Sciences, Tampere University, FI-33014 Tampere, Finland. AD - Research, Development and Innovation Center, Tampere University Hospital, P.O. Box 2000, FI-33521 Tampere, Finland. AD - Health and Well-Being Promotion Unit, Finnish Institute for Health and Welfare, P.O. Box 30, FI-00271 Helsinki, Finland. AD - Center for Child Health Research, Tampere University and Tampere University Hospital, FI-33014 Tampere, Finland. LA - eng GR - EFSD/JDRF/Lilly European Programme in Type 1 Diabetes Research;/ GR - 63672/Doctoral Programs in Public Health; the Academy of Finland/ GR - 79685/Doctoral Programs in Public Health; the Academy of Finland/ GR - 79686/Doctoral Programs in Public Health; the Academy of Finland/ GR - 80846/Doctoral Programs in Public Health; the Academy of Finland/ GR - 126813/Doctoral Programs in Public Health; the Academy of Finland/ GR - 201988/Doctoral Programs in Public Health; the Academy of Finland/ GR - 210632/Doctoral Programs in Public Health; the Academy of Finland/ GR - 276475/Doctoral Programs in Public Health; the Academy of Finland/ GR - 9E082/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9F089/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9G087/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9H092/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9J147/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9K149/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9L117/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9M114/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9N086/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9P057/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9R055/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9S074/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9U065/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9V072/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 9X062/Competitive Research Funding of the Turku and Oulu University Hospitals; the Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital/ GR - 197032/JDRF/Juvenile Diabetes Research Foundation/United States GR - 4-1998-274/JDRF/Juvenile Diabetes Research Foundation/United States GR - 4-1999-731/JDRF/Juvenile Diabetes Research Foundation/United States GR - 4-2001-435/JDRF/Juvenile Diabetes Research Foundation/United States GR - BMH4-CT98-3314/Novo Nordisk Foundation; and the European Union Biomed 2 Program/ GR - Doctoral Programme in Health Sciences, Tampere University/ GR - The Jenny and Antti Wihuri Foundation/ PT - Journal Article DEP - 20210313 PL - Switzerland TA - Nutrients JT - Nutrients JID - 101521595 RN - 0 (HLA Antigens) RN - 0 (Iron, Dietary) RN - PQ6CK8PD0R (Ascorbic Acid) SB - IM MH - Adult MH - Ascorbic Acid/analysis MH - Autoimmune Diseases/genetics/*immunology MH - Child, Preschool MH - Diabetes Mellitus, Type 1/genetics/*immunology MH - Diet/*adverse effects/statistics & numerical data MH - Diet Surveys MH - Dietary Supplements MH - Female MH - Finland MH - Genotype MH - HLA Antigens/immunology MH - Humans MH - Infant MH - Iron, Dietary/analysis MH - Islets of Langerhans/immunology MH - Male MH - Maternal Exposure/*adverse effects MH - Maternal Nutritional Physiological Phenomena/*immunology MH - Pregnancy MH - Prenatal Exposure Delayed Effects/genetics/*immunology MH - Proportional Hazards Models MH - Prospective Studies MH - Regression Analysis PMC - PMC8001228 OTO - NOTNLM OT - ascorbic acid OT - birth cohort OT - iron OT - islet autoimmunity OT - nutrition OT - pregnancy OT - type 1 diabetes OT - vitamin C COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2021/04/04 06:00 MHDA- 2021/05/25 06:00 PMCR- 2021/03/13 CRDT- 2021/04/03 01:21 PHST- 2021/01/28 00:00 [received] PHST- 2021/03/09 00:00 [revised] PHST- 2021/03/11 00:00 [accepted] PHST- 2021/04/03 01:21 [entrez] PHST- 2021/04/04 06:00 [pubmed] PHST- 2021/05/25 06:00 [medline] PHST- 2021/03/13 00:00 [pmc-release] AID - nu13030928 [pii] AID - nutrients-13-00928 [pii] AID - 10.3390/nu13030928 [doi] PST - epublish SO - Nutrients. 2021 Mar 13;13(3):928. doi: 10.3390/nu13030928.